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CVE-2021-23432

Prototype Pollution

5.4 Medium

CVE-2021-23432 is a medium vulnerability (CVSS 5.4) in Mootools Project Mootools, published August 24, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.89%, the 59th percentile. No source names a fixed version.

What does this mean?
Severity
5.4 MediumCVSS 3.1, CVE List
Exploit chance
0.89%EPSS, 59th percentile
Exploitation
None knownNot on CISA’s or ENISA’s lists
Fixed in
No fix listedNo source names one

Description

This affects all versions of package mootools. This is due to the ability to pass untrusted input to Object.merge()

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
Low
Integrity
Low
Availability
None

Exploit likelihood

0.89%Up 0.5 points since Aug 25, 2021
90%50%10%1%

Affected products

Affected packages

Affected packages
PackageAffectedFixed
mootools
npm
through 1.5.2None known
mootools
Ubuntu:16.04:LTS
All versions, plus listed versions
1.4.5~debian1-2.1
None known
mootools
Ubuntu:18.04:LTS
All versions, plus listed versions
1.4.5~debian1-2.1
None known
mootools
Ubuntu:20.04:LTS
All versions, plus listed versions
1.4.5~debian1-2.1
None known
mootools
Ubuntu:22.04:LTS
All versions, plus listed versions
1.4.5~debian1-3
None known
mootools
Ubuntu:24.04:LTS
All versions, plus listed versions
1.4.5~debian1-3
None known
mootools
Ubuntu:25.10
All versions, plus listed versions
1.4.5~debian1-3
None known
mootools
Ubuntu:26.10
All versions, plus listed versions
1.4.5~debian1-3build1
None known
mootools
Ubuntu:26.04:LTS
All versions, plus listed versions
1.4.5~debian1-31.4.5~debian1-3build1
None known

What each source reports

CVE List Score used5.4

Prototype Pollution

This affects all versions of package mootools. This is due to the ability to pass untrusted input to Object.merge()

Record
CVE-2021-23432
CVSS 3.1
5.4 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P
Updated
2026-11-02
EUVDEUVD-2021-21305.4

This affects all versions of package mootools. This is due to the ability to pass untrusted input to Object.merge()

Record
EUVD-2021-2130
CVSS 3.1
5.4 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P
Updated
2026-11-03
GitHub AdvisoriesGHSA-x6hx-7gh3-3q985.4

Prototype Pollution in mootools

This affects all versions of package mootools. This is due to the ability to pass untrusted input to Object.merge()

Record
GHSA-x6hx-7gh3-3q98
CVSS 3.1
5.4 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
Weakness
CWE-1321
Updated
2026-11-02
NVD5.4

This affects all versions of package mootools. This is due to the ability to pass untrusted input to Object.merge()

Record
CVE-2021-23432
CVSS 3.1
5.4 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
CVSS 3.1
9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0
7.5 HighAV:N/AC:L/Au:N/C:P/I:P/A:P
Updated
2026-11-02
OSVGHSA-x6hx-7gh3-3q985.4

Prototype Pollution in mootools

This affects all versions of package mootools. This is due to the ability to pass untrusted input to Object.merge()

Record
GHSA-x6hx-7gh3-3q98
CVSS 3.1
5.4 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
Weakness
CWE-1321
Updated
2026-11-02
OSVUBUNTU-CVE-2021-234325.4

This affects all versions of package mootools. This is due to the ability to pass untrusted input to Object.merge()

Record
UBUNTU-CVE-2021-23432
CVSS 3.1
5.4 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
CVSS 3.1
9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-02

History

History
RecordedChangedSources
facts
aliases, publishedEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

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

References

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