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CVE-2021-23960

Performing garbage collection on re-declared JavaScript variables resulted in a user-after-poison...

8.8 HighFix available

Performing garbage collection on re-declared JavaScript variables resulted in a user-after-poison, and a potentially exploitable crash. This vulnerability affects Firefox < 85, Thunderbird < 78.7, and Firefox ESR < 78.7.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
None
User interaction
Required

What an attacker can affect

Confidentiality
High
Integrity
High
Availability
High

Exploit likelihood

1.29%Up 0.2 points since Apr 14, 2021
90%50%10%1%

What each source reports

NVD Score used 8.8

Performing garbage collection on re-declared JavaScript variables resulted in a user-after-poison, and a potentially exploitable crash. This vulnerability affects Firefox < 85, Thunderbird < 78.7, and Firefox ESR < 78.7.

Record
CVE-2021-23960
CVSS 3.1
8.8 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS 2.0
6.8 MediumAV:N/AC:M/Au:N/C:P/I:P/A:P
Updated
2026-11-02
CVE List No score

Performing garbage collection on re-declared JavaScript variables resulted in a user-after-poison, and a potentially exploitable crash. This vulnerability affects Firefox < 85, Thunderbird < 78.7, and Firefox ESR < 78.7.

Record
CVE-2021-23960
Updated
2026-11-02
EUVDEUVD-2021-10881 No score

Performing garbage collection on re-declared JavaScript variables resulted in a user-after-poison, and a potentially exploitable crash. This vulnerability affects Firefox < 85, Thunderbird < 78.7, and Firefox ESR < 78.7.

Record
EUVD-2021-10881
Updated
2026-11-03
GitHub AdvisoriesGHSA-qvw3-rf6g-2w3x No score

Performing garbage collection on re-declared JavaScript variables resulted in a user-after-poison...

Performing garbage collection on re-declared JavaScript variables resulted in a user-after-poison, and a potentially exploitable crash. This vulnerability affects Firefox < 85, Thunderbird < 78.7, and Firefox ESR < 78.7.

Record
GHSA-qvw3-rf6g-2w3x
Updated
2026-11-02
OSVALPINE-CVE-2021-23960 8.8

Performing garbage collection on re-declared JavaScript variables resulted in a user-after-poison, and a potentially exploitable crash. This vulnerability affects Firefox < 85, Thunderbird < 78.7, and Firefox ESR < 78.7.

Record
ALPINE-CVE-2021-23960
CVSS 3.1
8.8 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-03
OSV 8.8

Performing garbage collection on re-declared JavaScript variables resulted in a user-after-poison, and a potentially exploitable crash. This vulnerability affects Firefox < 85, Thunderbird < 78.7, and Firefox ESR < 78.7.

Record
CVE-2021-23960
CVSS 3.1
8.8 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-02
Show 28 moreShow less
OSVDEBIAN-CVE-2021-23960 8.8

Performing garbage collection on re-declared JavaScript variables resulted in a user-after-poison, and a potentially exploitable crash. This vulnerability affects Firefox < 85, Thunderbird < 78.7, and Firefox ESR < 78.7.

Record
DEBIAN-CVE-2021-23960
CVSS 3.1
8.8 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVOESA-2023-1673 10.0

firefox security update

Mozilla Firefox is a standalone web browser, designed for standards compliance and performance. Its functionality can be enhanced via a plethora of extensions.

Mozilla Firefox is an open-source web browser, designed for standards compliance, performance and portability.

Security Fix(es):

Mozilla developers reported memory safety bugs present in Firefox for Android 79. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 80, Firefox ESR < 78.2, Thunderbird < 78.2, and Firefox for Android < 80.(CVE-2020-15670)

Mozilla developers reported memory safety bugs present in Firefox 80 and Firefox ESR 78.2. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 81, Thunderbird < 78.3, and Firefox ESR < 78.3.(CVE-2020-15673)

Mozilla developers reported memory safety bugs present in Firefox 80. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 81.(CVE-2020-15674)

When processing surfaces, the lifetime may outlive a persistent buffer leading to memory corruption and a potentially exploitable crash. This vulnerability affects Firefox < 81.(CVE-2020-15675)

If a valid external protocol handler was referenced in an image tag, the resulting broken image size could be distinguished from a broken image size of a non-existent protocol handler. This allowed an attacker to successfully probe whether an external protocol handler was registered. This vulnerability affects Firefox < 82.(CVE-2020-15680)

When multiple WASM threads had a reference to a module, and were looking up exported functions, one WASM thread could have overwritten another's entry in a shared stub table, resulting in a potentially exploitable crash. This vulnerability affects Firefox < 82.(CVE-2020-15681)

When a link to an external protocol was clicked, a prompt was presented that allowed the user to choose what application to open it in. An attacker could induce that prompt to be associated with an origin they didn't control, resulting in a spoofing attack. This was fixed by changing external protocol prompts to be tab-modal while also ensuring they could not be incorrectly associated with a different origin. This vulnerability affects Firefox < 82.(CVE-2020-15682)

Mozilla developers and community members reported memory safety bugs present in Firefox 81 and Firefox ESR 78.3. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox ESR < 78.4, Firefox < 82, and Thunderbird < 78.4.(CVE-2020-15683)

Mozilla developers reported memory safety bugs present in Firefox 81. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 82.(CVE-2020-15684)

Side-channel information leakage in graphics in Google Chrome prior to 87.0.4280.66 allowed a remote attacker to leak cross-origin data via a crafted HTML page.(CVE-2020-16012)

Use after free in WebRTC in Google Chrome prior to 88.0.4324.96 allowed a remote attacker to potentially exploit heap corruption via a crafted SCTP packet.(CVE-2020-16044)

In certain circumstances, the MCallGetProperty opcode can be emitted with unmet assumptions resulting in an exploitable use-after-free condition. This vulnerability affects Firefox < 82.0.3, Firefox ESR < 78.4.1, and Thunderbird < 78.4.2.(CVE-2020-26950)

(CVE-2020-26951)

(CVE-2020-26953) …

Record
OESA-2023-1673
CVSS 3.1
10.0 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Updated
2026-11-02
OSVOESA-2023-1674 10.0

firefox security update

Mozilla Firefox is a standalone web browser, designed for standards compliance and performance. Its functionality can be enhanced via a plethora of extensions.

Mozilla Firefox is an open-source web browser, designed for standards compliance, performance and portability.

Security Fix(es):

Mozilla developers reported memory safety bugs present in Firefox for Android 79. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 80, Firefox ESR < 78.2, Thunderbird < 78.2, and Firefox for Android < 80.(CVE-2020-15670)

Mozilla developers reported memory safety bugs present in Firefox 80 and Firefox ESR 78.2. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 81, Thunderbird < 78.3, and Firefox ESR < 78.3.(CVE-2020-15673)

Mozilla developers reported memory safety bugs present in Firefox 80. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 81.(CVE-2020-15674)

When processing surfaces, the lifetime may outlive a persistent buffer leading to memory corruption and a potentially exploitable crash. This vulnerability affects Firefox < 81.(CVE-2020-15675)

If a valid external protocol handler was referenced in an image tag, the resulting broken image size could be distinguished from a broken image size of a non-existent protocol handler. This allowed an attacker to successfully probe whether an external protocol handler was registered. This vulnerability affects Firefox < 82.(CVE-2020-15680)

When multiple WASM threads had a reference to a module, and were looking up exported functions, one WASM thread could have overwritten another's entry in a shared stub table, resulting in a potentially exploitable crash. This vulnerability affects Firefox < 82.(CVE-2020-15681)

When a link to an external protocol was clicked, a prompt was presented that allowed the user to choose what application to open it in. An attacker could induce that prompt to be associated with an origin they didn't control, resulting in a spoofing attack. This was fixed by changing external protocol prompts to be tab-modal while also ensuring they could not be incorrectly associated with a different origin. This vulnerability affects Firefox < 82.(CVE-2020-15682)

Mozilla developers and community members reported memory safety bugs present in Firefox 81 and Firefox ESR 78.3. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox ESR < 78.4, Firefox < 82, and Thunderbird < 78.4.(CVE-2020-15683)

Mozilla developers reported memory safety bugs present in Firefox 81. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 82.(CVE-2020-15684)

Side-channel information leakage in graphics in Google Chrome prior to 87.0.4280.66 allowed a remote attacker to leak cross-origin data via a crafted HTML page.(CVE-2020-16012)

Use after free in WebRTC in Google Chrome prior to 88.0.4324.96 allowed a remote attacker to potentially exploit heap corruption via a crafted SCTP packet.(CVE-2020-16044)

In certain circumstances, the MCallGetProperty opcode can be emitted with unmet assumptions resulting in an exploitable use-after-free condition. This vulnerability affects Firefox < 82.0.3, Firefox ESR < 78.4.1, and Thunderbird < 78.4.2.(CVE-2020-26950)

(CVE-2020-26951)

(CVE-2020-26953) …

Record
OESA-2023-1674
CVSS 3.1
10.0 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Updated
2026-11-02
OSVRHSA-2021:0285 8.8

Red Hat Security Advisory: firefox security update

Record
RHSA-2021:0285
CVSS 3.1
8.8 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVRHSA-2021:0288 8.8

Red Hat Security Advisory: firefox security update

Record
RHSA-2021:0288
CVSS 3.1
8.8 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVRHSA-2021:0289 8.8

Red Hat Security Advisory: firefox security update

Record
RHSA-2021:0289
CVSS 3.1
8.8 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVRHSA-2021:0290 8.8

Red Hat Security Advisory: firefox security update

Record
RHSA-2021:0290
CVSS 3.1
8.8 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVRHSA-2021:0297 8.8

Red Hat Security Advisory: thunderbird security update

Record
RHSA-2021:0297
CVSS 3.1
8.8 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVRHSA-2021:0298 8.8

Red Hat Security Advisory: thunderbird security update

Record
RHSA-2021:0298
CVSS 3.1
8.8 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVRHSA-2021:0299 8.8

Red Hat Security Advisory: thunderbird security update

Record
RHSA-2021:0299
CVSS 3.1
8.8 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVRHSA-2021:0397 8.8

Red Hat Security Advisory: thunderbird security update

Record
RHSA-2021:0397
CVSS 3.1
8.8 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVUBUNTU-CVE-2021-23960 8.8

Performing garbage collection on re-declared JavaScript variables resulted in a user-after-poison, and a potentially exploitable crash. This vulnerability affects Firefox < 85, Thunderbird < 78.7, and Firefox ESR < 78.7.

Record
UBUNTU-CVE-2021-23960
CVSS 3.1
8.8 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVMGASA-2021-0065 No score

Updated firefox packages fix security vulnerabilities

When a HTTPS page was embedded in a HTTP page, and there was a service worker registered for the former, the service worker could have intercepted the request for the secure page despite the iframe not being a secure context due to the (insecure) framing (CVE-2020-26976).

If a user clicked into a specifically crafted PDF, the PDF reader could be confused into leaking cross-origin information, when said information is served as chunked data (CVE-2021-23953).

Using the new logical assignment operators in a JavaScript switch statement could have caused a type confusion, leading to a memory corruption and a potentially exploitable crash (CVE-2021-23954).

Performing garbage collection on re-declared JavaScript variables resulted in a user-after-poison, and a potentially exploitable crash (CVE-2021-23960).

Mozilla developers Alexis Beingessner, Christian Holler, Andrew McCreight, Tyson Smith, Jon Coppeard, André Bargull, Jason Kratzer, Jesse Schwartzentruber, Steve Fink, Byron Campen reported memory safety bugs present in Firefox ESR 78.6. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code (CVE-2021-23964).

Record
MGASA-2021-0065
Updated
2026-11-02
OSVMGASA-2021-0066 No score

Updated thunderbird packages fix security vulnerabilities

Cross-origin information leakage via redirected PDF requests. (CVE-2021-23953)

Type confusion when using logical assignment operators in JavaScript switch statements. (CVE-2021-23954)

IMAP Response Injection when using STARTTLS. (CVE-2020-15685)

HTTPS pages could have been intercepted by a registered service worker when they should not have been. (CVE-2020-26976)

Use-after-poison for incorrectly redeclared JavaScript variables during GC. (CVE-2021-23960)

Memory safety bugs fixed in Thunderbird 78.7. (CVE-2021-23964).

Record
MGASA-2021-0066
Updated
2026-11-02
OSVopenSUSE-SU-2021:0208-1 No score

Security update for MozillaThunderbird

This update for MozillaThunderbird fixes the following issues:

  • Mozilla Thunderbird was updated to 78.7.0 ESR (MFSA 2021-05, bsc#1181414)
    • CVE-2021-23953: Fixed a Cross-origin information leakage via redirected PDF requests
    • CVE-2021-23954: Fixed a type confusion when using logical assignment operators in JavaScript switch statements
    • CVE-2020-26976: Fixed an issue where HTTPS pages could have been intercepted by a registered service worker when they should not have been
    • CVE-2021-23960: Fixed a use-after-poison for incorrectly redeclared JavaScript variables during GC
    • CVE-2021-23964: Fixed Memory safety bugs
    • CVE-2020-15685: Fixed an IMAP Response Injection when using STARTTLS

This update was imported from the SUSE:SLE-15:Update update project.

Record
openSUSE-SU-2021:0208-1
Updated
2026-11-02
OSVopenSUSE-SU-2021:0209-1 No score

Security update for MozillaThunderbird

This update for MozillaThunderbird fixes the following issues:

  • Mozilla Thunderbird was updated to 78.7.0 ESR (MFSA 2021-05, bsc#1181414)
    • CVE-2021-23953: Fixed a Cross-origin information leakage via redirected PDF requests
    • CVE-2021-23954: Fixed a type confusion when using logical assignment operators in JavaScript switch statements
    • CVE-2020-26976: Fixed an issue where HTTPS pages could have been intercepted by a registered service worker when they should not have been
    • CVE-2021-23960: Fixed a use-after-poison for incorrectly redeclared JavaScript variables during GC
    • CVE-2021-23964: Fixed Memory safety bugs
    • CVE-2020-15685: Fixed an IMAP Response Injection when using STARTTLS

This update was imported from the SUSE:SLE-15:Update update project.

Record
openSUSE-SU-2021:0209-1
Updated
2026-11-02
OSVopenSUSE-SU-2021:0222-1 No score

Security update for MozillaFirefox

This update for MozillaFirefox fixes the following issues:

  • Firefox Extended Support Release 78.7.0 ESR (MFSA 2021-04, bsc#1181414)
    • CVE-2021-23953: Fixed a Cross-origin information leakage via redirected PDF requests
    • CVE-2021-23954: Fixed a type confusion when using logical assignment operators in JavaScript switch statements
    • CVE-2020-26976: Fixed an issue where HTTPS pages could have been intercepted by a registered service worker when they should not have been
    • CVE-2021-23960: Fixed a use-after-poison for incorrectly redeclared JavaScript variables during GC
    • CVE-2021-23964: Fixed Memory safety bugs

This update was imported from the SUSE:SLE-15:Update update project.

Record
openSUSE-SU-2021:0222-1
Updated
2026-11-02
OSVopenSUSE-SU-2021:0223-1 No score

Security update for MozillaFirefox

This update for MozillaFirefox fixes the following issues:

  • Firefox Extended Support Release 78.7.0 ESR (MFSA 2021-04, bsc#1181414)
    • CVE-2021-23953: Fixed a Cross-origin information leakage via redirected PDF requests
    • CVE-2021-23954: Fixed a type confusion when using logical assignment operators in JavaScript switch statements
    • CVE-2020-26976: Fixed an issue where HTTPS pages could have been intercepted by a registered service worker when they should not have been
    • CVE-2021-23960: Fixed a use-after-poison for incorrectly redeclared JavaScript variables during GC
    • CVE-2021-23964: Fixed Memory safety bugs

This update was imported from the SUSE:SLE-15:Update update project.

Record
openSUSE-SU-2021:0223-1
Updated
2026-11-02
OSVopenSUSE-SU-2024:10600-1 No score

MozillaFirefox-92.0-1.2 on GA media

These are all security issues fixed in the MozillaFirefox-92.0-1.2 package on the GA media of openSUSE Tumbleweed.

Record
openSUSE-SU-2024:10600-1
Updated
2026-11-02
OSVopenSUSE-SU-2024:10601-1 No score

MozillaThunderbird-91.1.1-1.1 on GA media

These are all security issues fixed in the MozillaThunderbird-91.1.1-1.1 package on the GA media of openSUSE Tumbleweed.

Record
openSUSE-SU-2024:10601-1
Updated
2026-11-02
OSVopenSUSE-SU-2024:14572-1 No score

firefox-esr-128.5.1-1.1 on GA media

These are all security issues fixed in the firefox-esr-128.5.1-1.1 package on the GA media of openSUSE Tumbleweed.

Record
openSUSE-SU-2024:14572-1
Updated
2026-11-02
OSVSUSE-SU-2021:0241-1 No score

Security update for MozillaFirefox

This update for MozillaFirefox fixes the following issues:

  • Firefox Extended Support Release 78.7.0 ESR (MFSA 2021-04, bsc#1181414)
    • CVE-2021-23953: Fixed a Cross-origin information leakage via redirected PDF requests
    • CVE-2021-23954: Fixed a type confusion when using logical assignment operators in JavaScript switch statements
    • CVE-2020-26976: Fixed an issue where HTTPS pages could have been intercepted by a registered service worker when they should not have been
    • CVE-2021-23960: Fixed a use-after-poison for incorrectly redeclared JavaScript variables during GC
    • CVE-2021-23964: Fixed Memory safety bugs
Record
SUSE-SU-2021:0241-1
Updated
2026-11-02
OSVSUSE-SU-2021:0245-1 No score

Security update for MozillaThunderbird

This update for MozillaThunderbird fixes the following issues:

  • Mozilla Thunderbird was updated to 78.7.0 ESR (MFSA 2021-05, bsc#1181414)
    • CVE-2021-23953: Fixed a Cross-origin information leakage via redirected PDF requests
    • CVE-2021-23954: Fixed a type confusion when using logical assignment operators in JavaScript switch statements
    • CVE-2020-26976: Fixed an issue where HTTPS pages could have been intercepted by a registered service worker when they should not have been
    • CVE-2021-23960: Fixed a use-after-poison for incorrectly redeclared JavaScript variables during GC
    • CVE-2021-23964: Fixed Memory safety bugs
    • CVE-2020-15685: Fixed an IMAP Response Injection when using STARTTLS
Record
SUSE-SU-2021:0245-1
Updated
2026-11-02
OSVSUSE-SU-2021:0246-1 No score

Security update for MozillaFirefox

This update for MozillaFirefox fixes the following issues:

  • Firefox Extended Support Release 78.7.0 ESR (MFSA 2021-04, bsc#1181414)
    • CVE-2021-23953: Fixed a Cross-origin information leakage via redirected PDF requests
    • CVE-2021-23954: Fixed a type confusion when using logical assignment operators in JavaScript switch statements
    • CVE-2020-26976: Fixed an issue where HTTPS pages could have been intercepted by a registered service worker when they should not have been
    • CVE-2021-23960: Fixed a use-after-poison for incorrectly redeclared JavaScript variables during GC
    • CVE-2021-23964: Fixed Memory safety bugs
Record
SUSE-SU-2021:0246-1
Updated
2026-11-02
OSVSUSE-SU-2021:0257-1 No score

Security update for MozillaThunderbird

This update for MozillaThunderbird fixes the following issues:

  • Mozilla Thunderbird was updated to 78.7.0 ESR (MFSA 2021-05, bsc#1181414)
    • CVE-2021-23953: Fixed a Cross-origin information leakage via redirected PDF requests
    • CVE-2021-23954: Fixed a type confusion when using logical assignment operators in JavaScript switch statements
    • CVE-2020-26976: Fixed an issue where HTTPS pages could have been intercepted by a registered service worker when they should not have been
    • CVE-2021-23960: Fixed a use-after-poison for incorrectly redeclared JavaScript variables during GC
    • CVE-2021-23964: Fixed Memory safety bugs
    • CVE-2020-15685: Fixed an IMAP Response Injection when using STARTTLS
Record
SUSE-SU-2021:0257-1
Updated
2026-11-02
OSVSUSE-SU-2021:0259-1 No score

Security update for MozillaFirefox

This update for MozillaFirefox fixes the following issues:

  • Firefox Extended Support Release 78.7.0 ESR (MFSA 2021-04, bsc#1181414)
    • CVE-2021-23953: Fixed a Cross-origin information leakage via redirected PDF requests
    • CVE-2021-23954: Fixed a type confusion when using logical assignment operators in JavaScript switch statements
    • CVE-2020-26976: Fixed an issue where HTTPS pages could have been intercepted by a registered service worker when they should not have been
    • CVE-2021-23960: Fixed a use-after-poison for incorrectly redeclared JavaScript variables during GC
    • CVE-2021-23964: Fixed Memory safety bugs
Record
SUSE-SU-2021:0259-1
Updated
2026-11-02
OSVSUSE-SU-2021:14609-1 No score

Security update for MozillaFirefox

This update for MozillaFirefox fixes the following issues:

  • Firefox Extended Support Release 78.7.0 ESR (MFSA 2021-04, bsc#1181414)
    • CVE-2021-23953: Fixed a Cross-origin information leakage via redirected PDF requests
    • CVE-2021-23954: Fixed a type confusion when using logical assignment operators in JavaScript switch statements
    • CVE-2020-26976: Fixed an issue where HTTPS pages could have been intercepted by a registered service worker when they should not have been
    • CVE-2021-23960: Fixed a use-after-poison for incorrectly redeclared JavaScript variables during GC
    • CVE-2021-23964: Fixed Memory safety bugs
Record
SUSE-SU-2021:14609-1
Updated
2026-11-02
OSVUSN-4717-1 No score

firefox vulnerabilities

Multiple security issues were discovered in Firefox. If a user were tricked in to opening a specially crafted website, an attacker could potentially exploit these to cause a denial of service, obtain sensitive information, conduct clickjacking attacks, or execute arbitrary code.

Record
USN-4717-1
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
firefox
Alpine:v3.13
 before 85.0-r0
85.0-r0
firefox
Alpine:v3.14
 before 85.0-r0
85.0-r0
firefox
Alpine:v3.15
 before 85.0-r0
85.0-r0
firefox
Alpine:v3.16
 before 85.0-r0
85.0-r0
firefox
Alpine:v3.17
 before 85.0-r0
85.0-r0
firefox
Alpine:v3.18
 before 85.0-r0
85.0-r0
firefox
Alpine:v3.19
 before 85.0-r0
85.0-r0
firefox
Alpine:v3.20
 before 85.0-r0
85.0-r0
firefox
Alpine:v3.21
 before 85.0-r0
85.0-r0
firefox
Alpine:v3.22
 before 85.0-r0
85.0-r0
Show 129 moreShow less
Affected packages
PackageAffectedFixed
firefox
Alpine:v3.23
 before 85.0-r0
85.0-r0
firefox-esr
Alpine:v3.12
 before 78.7.0-r0
78.7.0-r0
firefox-esr
Alpine:v3.13
 before 78.7.0-r0
78.7.0-r0
firefox-esr
Alpine:v3.14
 before 78.7.0-r0
78.7.0-r0
firefox-esr
Alpine:v3.15
 before 78.7.0-r0
78.7.0-r0
firefox-esr
Alpine:v3.16
 before 78.7.0-r0
78.7.0-r0
firefox-esr
Alpine:v3.17
 before 78.7.0-r0
78.7.0-r0
firefox-esr
Alpine:v3.18
 before 78.7.0-r0
78.7.0-r0
firefox-esr
Alpine:v3.19
 before 78.7.0-r0
78.7.0-r0
firefox-esr
Alpine:v3.20
 before 78.7.0-r0
78.7.0-r0
firefox-esr
Alpine:v3.21
 before 78.7.0-r0
78.7.0-r0
firefox-esr
Alpine:v3.22
 before 78.7.0-r0
78.7.0-r0
firefox-esr
Alpine:v3.23
 before 78.7.0-r0
78.7.0-r0
librewolf
Alpine:v3.21
 before 85.0-r0
85.0-r0
librewolf
Alpine:v3.22
 before 85.0-r0
85.0-r0
librewolf
Alpine:v3.23
 before 85.0-r0
85.0-r0
librewolf
Alpine:v3.24
 before 85.0-r0
85.0-r0
mozjs78
Alpine:v3.13
 before 78.7.0-r0
78.7.0-r0
mozjs78
Alpine:v3.14
 before 78.7.0-r0
78.7.0-r0
mozjs78
Alpine:v3.15
 before 78.7.0-r0
78.7.0-r0
mozjs78
Alpine:v3.16
 before 78.7.0-r0
78.7.0-r0
thunderbird
Alpine:v3.16
 before 78.7.0-r0
78.7.0-r0
thunderbird
Alpine:v3.17
 before 78.7.0-r0
78.7.0-r0
thunderbird
Alpine:v3.18
 before 78.7.0-r0
78.7.0-r0
thunderbird
Alpine:v3.19
 before 78.7.0-r0
78.7.0-r0
thunderbird
Alpine:v3.20
 before 78.7.0-r0
78.7.0-r0
thunderbird
Alpine:v3.21
 before 78.7.0-r0
78.7.0-r0
thunderbird
Alpine:v3.22
 before 78.7.0-r0
78.7.0-r0
thunderbird
Alpine:v3.23
 before 78.7.0-r0
78.7.0-r0
firefox-esr
Debian:12
 before 78.7.0esr-1
78.7.0esr-1
firefox-esr
Debian:13
 before 78.7.0esr-1
78.7.0esr-1
firefox-esr
Debian:14
 before 78.7.0esr-1
78.7.0esr-1
thunderbird
Debian:12
 before 1:78.7.0-1
1:78.7.0-1
thunderbird
Debian:13
 before 1:78.7.0-1
1:78.7.0-1
thunderbird
Debian:14
 before 1:78.7.0-1
1:78.7.0-1
firefox-esr
Debian:9
From an advisory covering 5 CVEs
 before 78.7.0esr-1~deb9u1, plus listed versions
45.9.0esr-152.0.1esr-152.0.2esr-152.0esr-152.1.0esr-1
Show 45 moreShow less
52.2.0esr-152.2.0esr-1~deb7u152.2.0esr-1~deb8u152.2.0esr-1~deb9u152.2.0esr-252.3.0esr-152.3.0esr-1~deb7u152.3.0esr-1~deb8u152.3.0esr-1~deb8u252.3.0esr-1~deb9u152.3.0esr-252.4.0esr-1~deb8u152.4.0esr-1~deb9u152.4.0esr-252.4.0esr-2~deb7u152.5.0esr-152.5.0esr-1~deb7u152.5.0esr-1~deb8u152.5.0esr-1~deb9u152.5.2esr-152.5.2esr-1~deb7u152.5.2esr-1~deb8u152.5.2esr-1~deb9u152.5.3esr-152.6.0esr-152.6.0esr-1~deb7u152.6.0esr-1~deb8u152.6.0esr-1~deb9u152.6.0esr-252.6.0esr-2+alpha.152.6.0esr-2+alpha.252.7.0esr-152.7.0esr-1~deb8u152.7.0esr-1~deb9u152.7.1esr-152.7.1esr-1~deb7u152.7.1esr-1~deb8u152.7.1esr-1~deb9u152.7.2esr-152.7.2esr-1~deb7u152.7.2esr-1~deb8u152.7.2esr-1~deb9u152.7.3esr-152.7.3esr-1~deb7u152.7.3esr-1~deb8u1
78.7.0esr-1~deb9u1
thunderbird
Debian:9
From an advisory covering 7 CVEs
 before 1:78.7.0-1~deb9u1, plus listed versions
1.5-41.5.0.2-11.5.0.2-21.5.0.2-31.5.0.4-1
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1.5.0.4-21.5.0.4-31.5.0.5-11.5.0.7-11.5.0.7-21:52.4.0-11:52.4.0-1~deb7u11:52.4.0-1~deb8u11:52.4.0-1~deb9u11:52.4.0-2~exp11:52.5.0-11:52.5.0-1~deb7u11:52.5.0-1~deb8u11:52.5.0-1~deb9u11:52.5.2-11:52.5.2-1~deb7u11:52.5.2-21:52.5.2-2~deb8u11:52.5.2-2~deb9u11:52.6.0-11:52.6.0-1+alpha.11:52.6.0-1+alpha.21:52.6.0-1~deb7u11:52.6.0-1~deb8u11:52.6.0-1~deb9u11:52.7.0-11:52.7.0-1~deb7u11:52.7.0-1~deb8u11:52.7.0-1~deb9u11:52.8.0-11:52.8.0-1~deb7u11:52.8.0-1~deb8u11:52.8.0-1~deb9u11:52.9.0-11:52.9.1-11:52.9.1-1~deb8u11:52.9.1-1~deb9u11:58.0~b3-11:60.0-11:60.0-21:60.0-2~deb9u11:60.0-31:60.0-3~deb9u11:60.0~b10-11:60.0~b2-1
1:78.7.0-1~deb9u1
firefox-esr
Debian:10
From an advisory covering 5 CVEs
 before 78.7.0esr-1~deb10u1, plus listed versions
60.7.2esr-160.8.0esr-160.8.0esr-1~deb10u160.8.0esr-1~deb8u160.8.0esr-1~deb9u1
Show 45 moreShow less
60.9.0esr-1~deb10u160.9.0esr-1~deb8u160.9.0esr-1~deb8u260.9.0esr-1~deb9u168.0.2esr-168.1.0esr-168.10.0esr-168.10.0esr-1~deb10u168.10.0esr-1~deb9u168.11.0esr-168.11.0esr-1~deb10u168.11.0esr-1~deb9u168.12.0esr-168.12.0esr-1~deb10u168.12.0esr-1~deb9u168.2.0esr-168.2.0esr-1~deb10u168.2.0esr-1~deb8u168.2.0esr-1~deb9u168.2.0esr-1~deb9u268.3.0esr-168.3.0esr-1~deb10u168.3.0esr-1~deb8u168.3.0esr-1~deb9u168.4.0esr-168.4.0esr-1~deb10u168.4.0esr-1~deb8u168.4.0esr-1~deb9u168.4.1esr-168.4.1esr-1~deb10u168.4.1esr-1~deb8u168.4.1esr-1~deb9u168.4.2esr-168.5.0esr-168.5.0esr-1~deb10u168.5.0esr-1~deb8u168.5.0esr-1~deb9u168.6.0esr-168.6.0esr-1~deb10u168.6.0esr-1~deb8u168.6.0esr-1~deb9u168.6.1esr-168.6.1esr-1~deb10u168.6.1esr-1~deb9u168.7.0esr-1
78.7.0esr-1~deb10u1
thunderbird
Debian:10
From an advisory covering 7 CVEs
 before 1:78.7.0-1~deb10u1, plus listed versions
1:60.7.2-11:60.8.0-11:60.8.0-1~deb10u11:60.8.0-1~deb8u11:60.8.0-1~deb9u1
Show 45 moreShow less
1:60.8.0-21:60.9.0-11:60.9.0-1~deb10u11:60.9.0-1~deb8u11:60.9.0-1~deb9u11:65.0~b1-11:66.0~b1-11:67.0~b3-11:68.0~b1-11:68.1.1-1~exp11:68.1.2-1~exp11:68.10.0-11:68.10.0-1~deb10u11:68.10.0-1~deb9u11:68.11.0-11:68.11.0-1~deb10u11:68.11.0-1~deb9u11:68.11.0-21:68.11.0-31:68.12.0-11:68.12.0-1~deb10u11:68.12.0-1~deb9u11:68.12.0-1~deb9u21:68.2.1-11:68.2.2-11:68.2.2-1~deb10u11:68.2.2-1~deb8u11:68.2.2-1~deb9u11:68.3.0-11:68.3.0-21:68.3.0-2~deb10u11:68.3.0-2~deb8u11:68.3.0-2~deb9u11:68.3.1-11:68.4.1-11:68.4.1-1~deb10u11:68.4.1-1~deb8u11:68.4.1-1~deb9u11:68.4.2-11:68.5.0-11:68.5.0-1~deb10u11:68.5.0-1~deb8u11:68.5.0-1~deb9u11:68.6.0-11:68.6.0-1~deb10u1
1:78.7.0-1~deb10u1
crypto-policies
Mageia:7
From an advisory covering 5 CVEs
 before 20210118-1.mga7
20210118-1.mga7
nss
Mageia:7
From an advisory covering 5 CVEs
 before 3.61.0-1.mga7
3.61.0-1.mga7
firefox
Mageia:7
From an advisory covering 5 CVEs
 before 78.7.0-1.mga7
78.7.0-1.mga7
firefox-l10n
Mageia:7
From an advisory covering 5 CVEs
 before 78.7.0-1.mga7
78.7.0-1.mga7
thunderbird
Mageia:7
From an advisory covering 6 CVEs
 before 78.7.0-1.mga7
78.7.0-1.mga7
thunderbird-l10n
Mageia:7
From an advisory covering 6 CVEs
 before 78.7.0-1.mga7
78.7.0-1.mga7
firefox
openEuler:22.03-LTS
From an advisory covering 289 CVEs
 before 102.14.0-1.oe2203
102.14.0-1.oe2203
firefox
openEuler:22.03-LTS-SP1
From an advisory covering 289 CVEs
 before 102.14.0-1.oe2203sp1
102.14.0-1.oe2203sp1
firefox
Red Hat:rhel_eus:8.1::appstream
From an advisory covering 5 CVEs
 before 0:78.7.0-2.el8_1
0:78.7.0-2.el8_1
firefox-debuginfo
Red Hat:rhel_eus:8.1::appstream
From an advisory covering 5 CVEs
 before 0:78.7.0-2.el8_1
0:78.7.0-2.el8_1
firefox-debugsource
Red Hat:rhel_eus:8.1::appstream
From an advisory covering 5 CVEs
 before 0:78.7.0-2.el8_1
0:78.7.0-2.el8_1
firefox
Red Hat:enterprise_linux:8::appstream
From an advisory covering 5 CVEs
 before 0:78.7.0-2.el8_3
0:78.7.0-2.el8_3
firefox-debuginfo
Red Hat:enterprise_linux:8::appstream
From an advisory covering 5 CVEs
 before 0:78.7.0-2.el8_3
0:78.7.0-2.el8_3
firefox-debugsource
Red Hat:enterprise_linux:8::appstream
From an advisory covering 5 CVEs
 before 0:78.7.0-2.el8_3
0:78.7.0-2.el8_3
firefox
Red Hat:rhel_eus:8.2::appstream
From an advisory covering 5 CVEs
 before 0:78.7.0-2.el8_2
0:78.7.0-2.el8_2
firefox-debuginfo
Red Hat:rhel_eus:8.2::appstream
From an advisory covering 5 CVEs
 before 0:78.7.0-2.el8_2
0:78.7.0-2.el8_2
firefox-debugsource
Red Hat:rhel_eus:8.2::appstream
From an advisory covering 5 CVEs
 before 0:78.7.0-2.el8_2
0:78.7.0-2.el8_2
firefox
Red Hat:enterprise_linux:7::client
From an advisory covering 5 CVEs
 before 0:78.7.0-2.el7_9
0:78.7.0-2.el7_9
firefox-debuginfo
Red Hat:enterprise_linux:7::client
From an advisory covering 5 CVEs
 before 0:78.7.0-2.el7_9
0:78.7.0-2.el7_9
firefox
Red Hat:enterprise_linux:7::server
From an advisory covering 5 CVEs
 before 0:78.7.0-2.el7_9
0:78.7.0-2.el7_9
firefox-debuginfo
Red Hat:enterprise_linux:7::server
From an advisory covering 5 CVEs
 before 0:78.7.0-2.el7_9
0:78.7.0-2.el7_9
firefox
Red Hat:enterprise_linux:7::workstation
From an advisory covering 5 CVEs
 before 0:78.7.0-2.el7_9
0:78.7.0-2.el7_9
firefox-debuginfo
Red Hat:enterprise_linux:7::workstation
From an advisory covering 5 CVEs
 before 0:78.7.0-2.el7_9
0:78.7.0-2.el7_9
thunderbird
Red Hat:enterprise_linux:7::client
From an advisory covering 6 CVEs
 before 0:78.7.0-1.el7_9
0:78.7.0-1.el7_9
thunderbird-debuginfo
Red Hat:enterprise_linux:7::client
From an advisory covering 6 CVEs
 before 0:78.7.0-1.el7_9
0:78.7.0-1.el7_9
thunderbird
Red Hat:enterprise_linux:7::server
From an advisory covering 6 CVEs
 before 0:78.7.0-1.el7_9
0:78.7.0-1.el7_9
thunderbird-debuginfo
Red Hat:enterprise_linux:7::server
From an advisory covering 6 CVEs
 before 0:78.7.0-1.el7_9
0:78.7.0-1.el7_9
thunderbird
Red Hat:enterprise_linux:7::workstation
From an advisory covering 6 CVEs
 before 0:78.7.0-1.el7_9
0:78.7.0-1.el7_9
thunderbird-debuginfo
Red Hat:enterprise_linux:7::workstation
From an advisory covering 6 CVEs
 before 0:78.7.0-1.el7_9
0:78.7.0-1.el7_9
thunderbird
Red Hat:enterprise_linux:8::appstream
From an advisory covering 6 CVEs
 before 0:78.7.0-1.el8_3
0:78.7.0-1.el8_3
thunderbird-debuginfo
Red Hat:enterprise_linux:8::appstream
From an advisory covering 6 CVEs
 before 0:78.7.0-1.el8_3
0:78.7.0-1.el8_3
thunderbird-debugsource
Red Hat:enterprise_linux:8::appstream
From an advisory covering 6 CVEs
 before 0:78.7.0-1.el8_3
0:78.7.0-1.el8_3
thunderbird
Red Hat:rhel_eus:8.2::appstream
From an advisory covering 6 CVEs
 before 0:78.7.0-1.el8_2
0:78.7.0-1.el8_2
thunderbird-debuginfo
Red Hat:rhel_eus:8.2::appstream
From an advisory covering 6 CVEs
 before 0:78.7.0-1.el8_2
0:78.7.0-1.el8_2
thunderbird-debugsource
Red Hat:rhel_eus:8.2::appstream
From an advisory covering 6 CVEs
 before 0:78.7.0-1.el8_2
0:78.7.0-1.el8_2
thunderbird
Red Hat:rhel_eus:8.1::appstream
From an advisory covering 6 CVEs
 before 0:78.7.0-1.el8_1
0:78.7.0-1.el8_1
thunderbird-debuginfo
Red Hat:rhel_eus:8.1::appstream
From an advisory covering 6 CVEs
 before 0:78.7.0-1.el8_1
0:78.7.0-1.el8_1
thunderbird-debugsource
Red Hat:rhel_eus:8.1::appstream
From an advisory covering 6 CVEs
 before 0:78.7.0-1.el8_1
0:78.7.0-1.el8_1
MozillaFirefox
SUSE:HPE Helion OpenStack 8
From an advisory covering 5 CVEs
 before 78.7.0-112.45.1
78.7.0-112.45.1
MozillaFirefox
SUSE:OpenStack Cloud 7
From an advisory covering 5 CVEs
 before 78.7.0-112.45.1
78.7.0-112.45.1
MozillaFirefox
SUSE:OpenStack Cloud 8
From an advisory covering 5 CVEs
 before 78.7.0-112.45.1
78.7.0-112.45.1
MozillaFirefox
SUSE:OpenStack Cloud 9
From an advisory covering 5 CVEs
 before 78.7.0-112.45.1
78.7.0-112.45.1
MozillaFirefox
SUSE:OpenStack Cloud Crowbar 8
From an advisory covering 5 CVEs
 before 78.7.0-112.45.1
78.7.0-112.45.1
MozillaFirefox
SUSE:OpenStack Cloud Crowbar 9
From an advisory covering 5 CVEs
 before 78.7.0-112.45.1
78.7.0-112.45.1
MozillaFirefox
SUSE:Linux Enterprise Server for SAP Applications 12 SP2
From an advisory covering 5 CVEs
 before 78.7.0-112.45.1
78.7.0-112.45.1
MozillaFirefox
SUSE:Linux Enterprise Server for SAP Applications 12 SP3
From an advisory covering 5 CVEs
 before 78.7.0-112.45.1
78.7.0-112.45.1
MozillaFirefox
SUSE:Linux Enterprise Server for SAP Applications 12 SP4
From an advisory covering 5 CVEs
 before 78.7.0-112.45.1
78.7.0-112.45.1
MozillaFirefox
SUSE:Linux Enterprise Software Development Kit 12 SP5
From an advisory covering 5 CVEs
 before 78.7.0-112.45.1
78.7.0-112.45.1
MozillaFirefox
SUSE:Linux Enterprise Server 12 SP2-LTSS
From an advisory covering 5 CVEs
 before 78.7.0-112.45.1
78.7.0-112.45.1
MozillaFirefox
SUSE:Linux Enterprise Server 12 SP2-BCL
From an advisory covering 5 CVEs
 before 78.7.0-112.45.1
78.7.0-112.45.1
MozillaFirefox
SUSE:Linux Enterprise Server 12 SP3-LTSS
From an advisory covering 5 CVEs
 before 78.7.0-112.45.1
78.7.0-112.45.1
MozillaFirefox
SUSE:Linux Enterprise Server 12 SP3-BCL
From an advisory covering 5 CVEs
 before 78.7.0-112.45.1
78.7.0-112.45.1
MozillaFirefox
SUSE:Linux Enterprise Server 12 SP4-LTSS
From an advisory covering 5 CVEs
 before 78.7.0-112.45.1
78.7.0-112.45.1
MozillaFirefox
SUSE:Linux Enterprise Server 12 SP5
From an advisory covering 5 CVEs
 before 78.7.0-112.45.1
78.7.0-112.45.1
MozillaFirefox
SUSE:Linux Enterprise Server for SAP Applications 12 SP5
From an advisory covering 5 CVEs
 before 78.7.0-112.45.1
78.7.0-112.45.1
MozillaFirefox
SUSE:Enterprise Storage 5
From an advisory covering 5 CVEs
 before 78.7.0-112.45.1
78.7.0-112.45.1
MozillaThunderbird
SUSE:Linux Enterprise Workstation Extension 15 SP1
From an advisory covering 6 CVEs
 before 78.7.0-3.119.1
78.7.0-3.119.1
MozillaFirefox
SUSE:Linux Enterprise Module for Desktop Applications 15 SP1
From an advisory covering 5 CVEs
 before 78.7.0-3.128.2
78.7.0-3.128.2
MozillaFirefox
SUSE:Linux Enterprise High Performance Computing 15 SP1-ESPOS
From an advisory covering 5 CVEs
 before 78.7.0-3.128.2
78.7.0-3.128.2
MozillaFirefox
SUSE:Linux Enterprise High Performance Computing 15 SP1-LTSS
From an advisory covering 5 CVEs
 before 78.7.0-3.128.2
78.7.0-3.128.2
MozillaFirefox
SUSE:Linux Enterprise Server 15 SP1-BCL
From an advisory covering 5 CVEs
 before 78.7.0-3.128.2
78.7.0-3.128.2
MozillaFirefox
SUSE:Linux Enterprise Server 15 SP1-LTSS
From an advisory covering 5 CVEs
 before 78.7.0-3.128.2
78.7.0-3.128.2
MozillaFirefox
SUSE:Linux Enterprise Server for SAP Applications 15 SP1
From an advisory covering 5 CVEs
 before 78.7.0-3.128.2
78.7.0-3.128.2
MozillaFirefox
SUSE:Manager Proxy 4.0
From an advisory covering 5 CVEs
 before 78.7.0-3.128.2
78.7.0-3.128.2
MozillaFirefox
SUSE:Manager Retail Branch Server 4.0
From an advisory covering 5 CVEs
 before 78.7.0-3.128.2
78.7.0-3.128.2
MozillaFirefox
SUSE:Manager Server 4.0
From an advisory covering 5 CVEs
 before 78.7.0-3.128.2
78.7.0-3.128.2
MozillaFirefox
SUSE:Enterprise Storage 6
From an advisory covering 5 CVEs
 before 78.7.0-3.128.2
78.7.0-3.128.2
MozillaThunderbird
SUSE:Linux Enterprise Workstation Extension 15 SP2
From an advisory covering 6 CVEs
 before 78.7.0-8.9.1
78.7.0-8.9.1
MozillaFirefox
SUSE:Linux Enterprise Module for Desktop Applications 15 SP2
From an advisory covering 5 CVEs
 before 78.7.0-8.26.2
78.7.0-8.26.2
MozillaFirefox
SUSE:Linux Enterprise Server 11 SP4-LTSS
From an advisory covering 5 CVEs
 before 78.7.0-78.114.1
78.7.0-78.114.1
firefox
Ubuntu:16.04:LTS
 before 85.0+build1-0ubuntu0.16.04.1, plus listed versions
41.0.2+build2-0ubuntu142.0+build2-0ubuntu144.0+build3-0ubuntu244.0.1+build1-0ubuntu144.0.2+build1-0ubuntu1
Show 45 moreShow less
45.0+build2-0ubuntu145.0.1+build1-0ubuntu145.0.2+build1-0ubuntu146.0+build5-0ubuntu0.16.04.246.0.1+build1-0ubuntu0.16.04.247.0+build3-0ubuntu0.16.04.148.0+build2-0ubuntu0.16.04.149.0+build4-0ubuntu0.16.04.149.0.2+build2-0ubuntu0.16.04.250.0+build2-0ubuntu0.16.04.250.0.2+build1-0ubuntu0.16.04.150.1.0+build2-0ubuntu0.16.04.151.0.1+build2-0ubuntu0.16.04.151.0.1+build2-0ubuntu0.16.04.252.0+build2-0ubuntu0.16.04.152.0.1+build2-0ubuntu0.16.04.152.0.2+build1-0ubuntu0.16.04.153.0+build6-0ubuntu0.16.04.153.0.2+build1-0ubuntu0.16.04.253.0.3+build1-0ubuntu0.16.04.254.0+build3-0ubuntu0.16.04.155.0.1+build2-0ubuntu0.16.04.255.0.2+build1-0ubuntu0.16.04.156.0+build6-0ubuntu0.16.04.156.0+build6-0ubuntu0.16.04.257.0+build4-0ubuntu0.16.04.557.0+build4-0ubuntu0.16.04.657.0.1+build2-0ubuntu0.16.04.157.0.3+build1-0ubuntu0.16.04.157.0.4+build1-0ubuntu0.16.04.158.0+build6-0ubuntu0.16.04.158.0.1+build1-0ubuntu0.16.04.158.0.2+build1-0ubuntu0.16.04.159.0+build5-0ubuntu0.16.04.159.0.1+build1-0ubuntu0.16.04.159.0.2+build1-0ubuntu0.16.04.159.0.2+build1-0ubuntu0.16.04.360.0+build2-0ubuntu0.16.04.160.0.1+build2-0ubuntu0.16.04.160.0.2+build1-0ubuntu0.16.04.161.0+build3-0ubuntu0.16.04.261.0.1+build1-0ubuntu0.16.04.162.0+build2-0ubuntu0.16.04.362.0+build2-0ubuntu0.16.04.462.0+build2-0ubuntu0.16.04.5
85.0+build1-0ubuntu0.16.04.1
firefox
Ubuntu:18.04:LTS
 before 85.0+build1-0ubuntu0.18.04.1, plus listed versions
56.0+build6-0ubuntu157.0.1+build2-0ubuntu159.0.1+build1-0ubuntu159.0.2+build1-0ubuntu160.0+build2-0ubuntu1
Show 45 moreShow less
60.0.1+build2-0ubuntu0.18.04.160.0.2+build1-0ubuntu0.18.04.161.0+build3-0ubuntu0.18.04.161.0.1+build1-0ubuntu0.18.04.162.0+build2-0ubuntu0.18.04.362.0+build2-0ubuntu0.18.04.462.0+build2-0ubuntu0.18.04.562.0.3+build1-0ubuntu0.18.04.163.0+build2-0ubuntu0.18.04.263.0.3+build1-0ubuntu0.18.04.164.0+build3-0ubuntu0.18.04.165.0+build2-0ubuntu0.18.04.165.0.1+build2-0ubuntu0.18.04.166.0+build3-0ubuntu0.18.04.166.0.1+build1-0ubuntu0.18.04.166.0.2+build1-0ubuntu0.18.04.166.0.3+build1-0ubuntu0.18.04.166.0.4+build3-0ubuntu0.18.04.166.0.5+build1-0ubuntu0.18.04.167.0+build2-0ubuntu0.18.04.167.0.1+build1-0ubuntu0.18.04.167.0.2+build2-0ubuntu0.18.04.167.0.3+build1-0ubuntu0.18.04.167.0.4+build1-0ubuntu0.18.04.168.0+build3-0ubuntu0.18.04.168.0.1+build1-0ubuntu0.18.04.168.0.2+build1-0ubuntu0.18.04.169.0+build2-0ubuntu0.18.04.169.0.1+build1-0ubuntu0.18.04.169.0.2+build1-0ubuntu0.18.04.170.0+build2-0ubuntu0.18.04.170.0.1+build1-0ubuntu0.18.04.171.0+build5-0ubuntu0.18.04.172.0.1+build1-0ubuntu0.18.04.172.0.2+build1-0ubuntu0.18.04.173.0+build3-0ubuntu0.18.04.173.0.1+build1-0ubuntu0.18.04.174.0+build3-0ubuntu0.18.04.174.0.1+build1-0ubuntu0.18.04.175.0+build3-0ubuntu0.18.04.176.0+build2-0ubuntu0.18.04.176.0.1+build1-0ubuntu0.18.04.177.0.1+build1-0ubuntu0.18.04.178.0.1+build1-0ubuntu0.18.04.178.0.2+build2-0ubuntu0.18.04.1
85.0+build1-0ubuntu0.18.04.1
thunderbird
Ubuntu:18.04:LTS
 before 1:78.8.1+build1-0ubuntu0.18.04.1, plus listed versions
1:52.4.0+build1-0ubuntu21:52.6.0+build1-0ubuntu11:52.7.0+build1-0ubuntu11:52.8.0+build1-0ubuntu0.18.04.11:52.9.1+build3-0ubuntu0.18.04.1
Show 15 moreShow less
1:60.2.1+build1-0ubuntu0.18.04.21:60.4.0+build2-0ubuntu0.18.04.11:60.5.1+build2-0ubuntu0.18.04.11:60.6.1+build2-0ubuntu0.18.04.11:60.7.0+build1-0ubuntu0.18.04.11:60.7.1+build1-0ubuntu0.18.04.11:60.7.2+build2-0ubuntu0.18.04.11:60.8.0+build1-0ubuntu0.18.04.11:60.9.0+build1-0ubuntu0.18.04.11:68.2.1+build1-0ubuntu0.18.04.11:68.2.2+build1-0ubuntu0.18.04.11:68.4.1+build1-0ubuntu0.18.04.11:68.7.0+build1-0ubuntu0.18.04.11:68.8.0+build2-0ubuntu0.18.04.21:68.10.0+build1-0ubuntu0.18.04.1
1:78.8.1+build1-0ubuntu0.18.04.1
mozjs52
Ubuntu:18.04:LTS
 All versions, plus listed versions
52.3.1-0ubuntu352.3.1-7fakesync152.8.1-0ubuntu0.18.04.152.9.1-0ubuntu0.18.04.1
 None known
mozjs38
Ubuntu:18.04:LTS
 All versions, plus listed versions
38.8.0~repack1-0ubuntu138.8.0~repack1-0ubuntu338.8.0~repack1-0ubuntu4
 None known
firefox
Ubuntu:20.04:LTS
 before 85.0+build1-0ubuntu0.20.04.1, plus listed versions
69.0.3+build1-0ubuntu170.0+build2-0ubuntu170.0+build2-0ubuntu270.0.1+build1-0ubuntu271.0+build2-0ubuntu2
Show 29 moreShow less
71.0+build5-0ubuntu172.0.1+build1-0ubuntu172.0.2+build1-0ubuntu173.0+build1-0ubuntu173.0+build2-0ubuntu173.0+build3-0ubuntu173.0.1+build1-0ubuntu174.0+build1-0ubuntu174.0+build2-0ubuntu174.0+build2-0ubuntu274.0+build3-0ubuntu175.0+build3-0ubuntu176.0+build2-0ubuntu0.20.04.176.0.1+build1-0ubuntu0.20.04.177.0.1+build1-0ubuntu0.20.04.178.0.1+build1-0ubuntu0.20.04.178.0.2+build2-0ubuntu0.20.04.179.0+build1-0ubuntu0.20.04.180.0+build2-0ubuntu0.20.04.180.0.1+build1-0ubuntu0.20.04.181.0+build2-0ubuntu0.20.04.181.0.2+build1-0ubuntu0.20.04.182.0+build2-0ubuntu0.20.04.182.0.2+build1-0ubuntu0.20.04.182.0.3+build1-0ubuntu0.20.04.183.0+build2-0ubuntu0.20.04.184.0+build3-0ubuntu0.20.04.184.0.1+build1-0ubuntu0.20.04.184.0.2+build1-0ubuntu0.20.04.1
85.0+build1-0ubuntu0.20.04.1
thunderbird
Ubuntu:20.04:LTS
 before 1:78.7.1+build1-0ubuntu0.20.04.1, plus listed versions
1:68.1.2+build1-0ubuntu11:68.1.2+build1-0ubuntu21:68.2.1+build1-0ubuntu11:68.2.2+build1-0ubuntu11:68.3.0+build2-0ubuntu1
Show 9 moreShow less
1:68.3.1+build1-0ubuntu21:68.4.1+build1-0ubuntu11:68.4.2+build2-0ubuntu11:68.5.0+build1-0ubuntu11:68.6.0+build2-0ubuntu11:68.7.0+build1-0ubuntu11:68.7.0+build1-0ubuntu21:68.8.0+build2-0ubuntu0.20.04.21:68.10.0+build1-0ubuntu0.20.04.1
1:78.7.1+build1-0ubuntu0.20.04.1
mozjs68
Ubuntu:20.04:LTS
 All versions, plus listed versions
68.5.0-1~fakesync68.5.0-2~fakesync68.6.0-168.6.0-1ubuntu1
 None known
mozjs52
Ubuntu:20.04:LTS
 All versions, plus listed versions
52.9.1-1build152.9.1-1ubuntu3
 None known
mozjs78
Ubuntu:22.04:LTS
 All versions, plus listed versions
78.13.0-178.15.0-278.15.0-4ubuntu1
 None known
firefox
Ubuntu:16.04:LTS
From an advisory covering 11 CVEs
 before 85.0+build1-0ubuntu0.16.04.1, plus listed versions
41.0.2+build2-0ubuntu142.0+build2-0ubuntu144.0+build3-0ubuntu244.0.1+build1-0ubuntu144.0.2+build1-0ubuntu1
Show 45 moreShow less
45.0+build2-0ubuntu145.0.1+build1-0ubuntu145.0.2+build1-0ubuntu146.0+build5-0ubuntu0.16.04.246.0.1+build1-0ubuntu0.16.04.247.0+build3-0ubuntu0.16.04.148.0+build2-0ubuntu0.16.04.149.0+build4-0ubuntu0.16.04.149.0.2+build2-0ubuntu0.16.04.250.0+build2-0ubuntu0.16.04.250.0.2+build1-0ubuntu0.16.04.150.1.0+build2-0ubuntu0.16.04.151.0.1+build2-0ubuntu0.16.04.151.0.1+build2-0ubuntu0.16.04.252.0+build2-0ubuntu0.16.04.152.0.1+build2-0ubuntu0.16.04.152.0.2+build1-0ubuntu0.16.04.153.0+build6-0ubuntu0.16.04.153.0.2+build1-0ubuntu0.16.04.253.0.3+build1-0ubuntu0.16.04.254.0+build3-0ubuntu0.16.04.155.0.1+build2-0ubuntu0.16.04.255.0.2+build1-0ubuntu0.16.04.156.0+build6-0ubuntu0.16.04.156.0+build6-0ubuntu0.16.04.257.0+build4-0ubuntu0.16.04.557.0+build4-0ubuntu0.16.04.657.0.1+build2-0ubuntu0.16.04.157.0.3+build1-0ubuntu0.16.04.157.0.4+build1-0ubuntu0.16.04.158.0+build6-0ubuntu0.16.04.158.0.1+build1-0ubuntu0.16.04.158.0.2+build1-0ubuntu0.16.04.159.0+build5-0ubuntu0.16.04.159.0.1+build1-0ubuntu0.16.04.159.0.2+build1-0ubuntu0.16.04.159.0.2+build1-0ubuntu0.16.04.360.0+build2-0ubuntu0.16.04.160.0.1+build2-0ubuntu0.16.04.160.0.2+build1-0ubuntu0.16.04.161.0+build3-0ubuntu0.16.04.261.0.1+build1-0ubuntu0.16.04.162.0+build2-0ubuntu0.16.04.362.0+build2-0ubuntu0.16.04.462.0+build2-0ubuntu0.16.04.5
85.0+build1-0ubuntu0.16.04.1
firefox
Ubuntu:18.04:LTS
From an advisory covering 11 CVEs
 before 85.0+build1-0ubuntu0.18.04.1, plus listed versions
56.0+build6-0ubuntu157.0.1+build2-0ubuntu159.0.1+build1-0ubuntu159.0.2+build1-0ubuntu160.0+build2-0ubuntu1
Show 45 moreShow less
60.0.1+build2-0ubuntu0.18.04.160.0.2+build1-0ubuntu0.18.04.161.0+build3-0ubuntu0.18.04.161.0.1+build1-0ubuntu0.18.04.162.0+build2-0ubuntu0.18.04.362.0+build2-0ubuntu0.18.04.462.0+build2-0ubuntu0.18.04.562.0.3+build1-0ubuntu0.18.04.163.0+build2-0ubuntu0.18.04.263.0.3+build1-0ubuntu0.18.04.164.0+build3-0ubuntu0.18.04.165.0+build2-0ubuntu0.18.04.165.0.1+build2-0ubuntu0.18.04.166.0+build3-0ubuntu0.18.04.166.0.1+build1-0ubuntu0.18.04.166.0.2+build1-0ubuntu0.18.04.166.0.3+build1-0ubuntu0.18.04.166.0.4+build3-0ubuntu0.18.04.166.0.5+build1-0ubuntu0.18.04.167.0+build2-0ubuntu0.18.04.167.0.1+build1-0ubuntu0.18.04.167.0.2+build2-0ubuntu0.18.04.167.0.3+build1-0ubuntu0.18.04.167.0.4+build1-0ubuntu0.18.04.168.0+build3-0ubuntu0.18.04.168.0.1+build1-0ubuntu0.18.04.168.0.2+build1-0ubuntu0.18.04.169.0+build2-0ubuntu0.18.04.169.0.1+build1-0ubuntu0.18.04.169.0.2+build1-0ubuntu0.18.04.170.0+build2-0ubuntu0.18.04.170.0.1+build1-0ubuntu0.18.04.171.0+build5-0ubuntu0.18.04.172.0.1+build1-0ubuntu0.18.04.172.0.2+build1-0ubuntu0.18.04.173.0+build3-0ubuntu0.18.04.173.0.1+build1-0ubuntu0.18.04.174.0+build3-0ubuntu0.18.04.174.0.1+build1-0ubuntu0.18.04.175.0+build3-0ubuntu0.18.04.176.0+build2-0ubuntu0.18.04.176.0.1+build1-0ubuntu0.18.04.177.0.1+build1-0ubuntu0.18.04.178.0.1+build1-0ubuntu0.18.04.178.0.2+build2-0ubuntu0.18.04.1
85.0+build1-0ubuntu0.18.04.1
firefox
Ubuntu:20.04:LTS
From an advisory covering 11 CVEs
 before 85.0+build1-0ubuntu0.20.04.1, plus listed versions
69.0.3+build1-0ubuntu170.0+build2-0ubuntu170.0+build2-0ubuntu270.0.1+build1-0ubuntu271.0+build2-0ubuntu2
Show 29 moreShow less
71.0+build5-0ubuntu172.0.1+build1-0ubuntu172.0.2+build1-0ubuntu173.0+build1-0ubuntu173.0+build2-0ubuntu173.0+build3-0ubuntu173.0.1+build1-0ubuntu174.0+build1-0ubuntu174.0+build2-0ubuntu174.0+build2-0ubuntu274.0+build3-0ubuntu175.0+build3-0ubuntu176.0+build2-0ubuntu0.20.04.176.0.1+build1-0ubuntu0.20.04.177.0.1+build1-0ubuntu0.20.04.178.0.1+build1-0ubuntu0.20.04.178.0.2+build2-0ubuntu0.20.04.179.0+build1-0ubuntu0.20.04.180.0+build2-0ubuntu0.20.04.180.0.1+build1-0ubuntu0.20.04.181.0+build2-0ubuntu0.20.04.181.0.2+build1-0ubuntu0.20.04.182.0+build2-0ubuntu0.20.04.182.0.2+build1-0ubuntu0.20.04.182.0.3+build1-0ubuntu0.20.04.183.0+build2-0ubuntu0.20.04.184.0+build3-0ubuntu0.20.04.184.0.1+build1-0ubuntu0.20.04.184.0.2+build1-0ubuntu0.20.04.1
85.0+build1-0ubuntu0.20.04.1
MozillaThunderbird
openSUSE:Leap 15.1
From an advisory covering 6 CVEs
 before 78.7.0-lp151.2.69.1
78.7.0-lp151.2.69.1
MozillaThunderbird
openSUSE:Leap 15.2
From an advisory covering 6 CVEs
 before 78.7.0-lp152.2.29.1
78.7.0-lp152.2.29.1
MozillaFirefox
openSUSE:Leap 15.1
From an advisory covering 5 CVEs
 before 78.7.0-lp151.2.88.2
78.7.0-lp151.2.88.2
MozillaFirefox
openSUSE:Leap 15.2
From an advisory covering 5 CVEs
 before 78.7.0-lp152.2.43.1
78.7.0-lp152.2.43.1
MozillaFirefox
openSUSE:Tumbleweed
From an advisory covering 661 CVEs
 before 92.0-1.2
92.0-1.2
MozillaThunderbird
openSUSE:Tumbleweed
From an advisory covering 394 CVEs
 before 91.1.1-1.1
91.1.1-1.1
firefox-esr
openSUSE:Tumbleweed
From an advisory covering 1860 CVEs
 before 128.5.1-1.1
128.5.1-1.1

History

History
RecordedChangedSources
affected, facts
affected, aliases, referencesOSV
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2021-23960 is a high vulnerability (CVSS 8.8) in Mozilla Firefox, published January 26, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.29%, the 70th percentile. Fixed in firefox 85.0-r0.

References

Show 194 moreShow less
This page doesn't list everything

Left out here: 494 versions, 2,117 references and the rest of 2 source descriptions. The JSON record has them.

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