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CVE-2021-21228

Insufficient policy enforcement in extensions in Google Chrome prior to 90.0.4430.93 allowed an...

4.3 MediumFix available

Insufficient policy enforcement in extensions in Google Chrome prior to 90.0.4430.93 allowed an attacker who convinced a user to install a malicious extension to bypass navigation restrictions via a crafted Chrome Extension.

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
None
Integrity
Low
Availability
None

Exploit likelihood

1.06%Up 0.2 points since May 1, 2021
90%50%10%1%

What each source reports

NVD Score used 4.3

Insufficient policy enforcement in extensions in Google Chrome prior to 90.0.4430.93 allowed an attacker who convinced a user to install a malicious extension to bypass navigation restrictions via a crafted Chrome Extension.

Record
CVE-2021-21228
CVSS 3.1
4.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
CVSS 2.0
4.3 MediumAV:N/AC:M/Au:N/C:N/I:P/A:N
Weakness
CWE-863
Updated
2026-11-02
CVE List No score

Insufficient policy enforcement in extensions in Google Chrome prior to 90.0.4430.93 allowed an attacker who convinced a user to install a malicious extension to bypass navigation restrictions via a crafted Chrome Extension.

Record
CVE-2021-21228
Updated
2026-11-02
EUVDEUVD-2021-8619 No score

Insufficient policy enforcement in extensions in Google Chrome prior to 90.0.4430.93 allowed an attacker who convinced a user to install a malicious extension to bypass navigation restrictions via a crafted Chrome Extension.

Record
EUVD-2021-8619
Updated
2026-11-03
GitHub AdvisoriesGHSA-xmhm-4533-hmhq No score

Insufficient policy enforcement in extensions in Google Chrome prior to 90.0.4430.93 allowed an...

Insufficient policy enforcement in extensions in Google Chrome prior to 90.0.4430.93 allowed an attacker who convinced a user to install a malicious extension to bypass navigation restrictions via a crafted Chrome Extension.

Record
GHSA-xmhm-4533-hmhq
Weakness
CWE-863
Updated
2026-11-02
OSV 4.3

Insufficient policy enforcement in extensions in Google Chrome prior to 90.0.4430.93 allowed an attacker who convinced a user to install a malicious extension to bypass navigation restrictions via a crafted Chrome Extension.

Record
CVE-2021-21228
CVSS 3.1
4.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
Updated
2026-11-02
OSVDEBIAN-CVE-2021-21228 4.3

Insufficient policy enforcement in extensions in Google Chrome prior to 90.0.4430.93 allowed an attacker who convinced a user to install a malicious extension to bypass navigation restrictions via a crafted Chrome Extension.

Record
DEBIAN-CVE-2021-21228
CVSS 3.1
4.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
Updated
2026-11-02
Show 5 moreShow less
OSVUBUNTU-CVE-2021-21228 4.3

Insufficient policy enforcement in extensions in Google Chrome prior to 90.0.4430.93 allowed an attacker who convinced a user to install a malicious extension to bypass navigation restrictions via a crafted Chrome Extension.

Record
UBUNTU-CVE-2021-21228
CVSS 3.1
4.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
Updated
2026-11-02
OSVopenSUSE-SU-2021:0629-1 No score

Security update for Chromium

This update for chromium fixes the following issues:

  • Chromium was updated to 90.0.4430.93 (boo#1184764,boo#1185047,boo#1185398)
    • CVE-2021-21227: Insufficient data validation in V8.
    • CVE-2021-21232: Use after free in Dev Tools.
    • CVE-2021-21233: Heap buffer overflow in ANGLE.
    • CVE-2021-21228: Insufficient policy enforcement in extensions.
    • CVE-2021-21229: Incorrect security UI in downloads.
    • CVE-2021-21230: Type Confusion in V8.
    • CVE-2021-21231: Insufficient data validation in V8.
    • CVE-2021-21222: Heap buffer overflow in V8
    • CVE-2021-21223: Integer overflow in Mojo
    • CVE-2021-21224: Type Confusion in V8
    • CVE-2021-21225: Out of bounds memory access in V8
    • CVE-2021-21226: Use after free in navigation
    • CVE-2021-21201: Use after free in permissions
    • CVE-2021-21202: Use after free in extensions
    • CVE-2021-21203: Use after free in Blink
    • CVE-2021-21204: Use after free in Blink
    • CVE-2021-21205: Insufficient policy enforcement in navigation
    • CVE-2021-21221: Insufficient validation of untrusted input in Mojo
    • CVE-2021-21207: Use after free in IndexedDB
    • CVE-2021-21208: Insufficient data validation in QR scanner
    • CVE-2021-21209: Inappropriate implementation in storage
    • CVE-2021-21210: Inappropriate implementation in Network
    • CVE-2021-21211: Inappropriate implementation in Navigatio
    • CVE-2021-21212: Incorrect security UI in Network Config UI
    • CVE-2021-21213: Use after free in WebMIDI
Record
openSUSE-SU-2021:0629-1
Updated
2026-11-02
OSVopenSUSE-SU-2021:0729-1 No score

Security update for opera

This update for opera fixes the following issues:

Update to version 76.0.4017.107

  • CHR-8413 Update chromium on desktop-stable-90-4017 to 90.0.4430.93
  • DNA-90168 Display SD suggestions titles
  • DNA-92693 ‘Re-attach tab’ overlay is not resized with window
  • DNA-92926 [Mac][Cashback] “Close Tab” menu item not greyed out for Cashback corner
  • DNA-92934 Report crashes from opera://crashes and Tooltip to new Atlassian
  • DNA-92980 Enable tutorials flag on all streams
  • The update to chromium 90.0.4430.93 fixes following issues:
    CVE-2021-21227, CVE-2021-21232, CVE-2021-21233, CVE-2021-21228, CVE-2021-21229, CVE-2021-21230, CVE-2021-21231
Record
openSUSE-SU-2021:0729-1
Updated
2026-11-02
OSVopenSUSE-SU-2024:10681-1 No score

chromedriver-93.0.4577.82-1.1 on GA media

These are all security issues fixed in the chromedriver-93.0.4577.82-1.1 package on the GA media of openSUSE Tumbleweed.

Record
openSUSE-SU-2024:10681-1
Updated
2026-11-02
OSVopenSUSE-SU-2024:12948-1 No score

ungoogled-chromium-113.0.5672.92-1.1 on GA media

These are all security issues fixed in the ungoogled-chromium-113.0.5672.92-1.1 package on the GA media of openSUSE Tumbleweed.

Record
openSUSE-SU-2024:12948-1
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
chromium
Debian:12
 before 90.0.4430.93-1
90.0.4430.93-1
chromium
Debian:13
 before 90.0.4430.93-1
90.0.4430.93-1
chromium
Debian:14
 before 90.0.4430.93-1
90.0.4430.93-1
chromium
Debian:10
From an advisory covering 7 CVEs
 before 90.0.4430.93-1~deb10u1, plus listed versions
73.0.3683.75-174.0.3729.108-175.0.3770.10-175.0.3770.80-175.0.3770.90-1
Show 45 moreShow less
76.0.3809.100-176.0.3809.100-1~deb10u176.0.3809.62-176.0.3809.71-176.0.3809.87-176.0.3809.87-278.0.3904.108-178.0.3904.108-1~deb10u178.0.3904.87-178.0.3904.97-178.0.3904.97-1~deb10u179.0.3945.130-179.0.3945.130-1~deb10u179.0.3945.130-279.0.3945.56-179.0.3945.79-180.0.3987.106-180.0.3987.116-180.0.3987.122-180.0.3987.122-280.0.3987.132-180.0.3987.132-1~deb10u180.0.3987.149-180.0.3987.149-1~deb10u180.0.3987.162-180.0.3987.162-1~deb10u181.0.4044.62-181.0.4044.92-183.0.4103.106-183.0.4103.116-183.0.4103.116-1~deb10u183.0.4103.116-1~deb10u283.0.4103.116-1~deb10u383.0.4103.116-283.0.4103.116-383.0.4103.116-3.183.0.4103.83-184.0.4147.105-184.0.4147.89-187.0.4280.141-0.187.0.4280.141-0.1~deb10u187.0.4280.88-0.187.0.4280.88-0.287.0.4280.88-0.387.0.4280.88-0.4
90.0.4430.93-1~deb10u1
chromium-browser
Ubuntu:18.04:LTS
 before 90.0.4430.93-0ubuntu0.18.04.1, plus listed versions
61.0.3163.100-0ubuntu1.137862.0.3202.62-0ubuntu0.17.10.138062.0.3202.89-0ubuntu1.138662.0.3202.94-0ubuntu1.138863.0.3239.84-0ubuntu1
Show 45 moreShow less
63.0.3239.108-0ubuntu164.0.3282.119-0ubuntu164.0.3282.140-0ubuntu164.0.3282.167-0ubuntu165.0.3325.146-0ubuntu165.0.3325.181-0ubuntu166.0.3359.139-0ubuntu0.18.04.366.0.3359.181-0ubuntu0.18.04.167.0.3396.99-0ubuntu0.18.04.168.0.3440.75-0ubuntu0.18.04.168.0.3440.106-0ubuntu0.18.04.169.0.3497.81-0ubuntu0.18.04.170.0.3538.67-0ubuntu0.18.04.170.0.3538.77-0ubuntu0.18.04.170.0.3538.110-0ubuntu0.18.04.171.0.3578.80-0ubuntu0.18.04.171.0.3578.98-0ubuntu0.18.04.172.0.3626.119-0ubuntu0.18.04.172.0.3626.121-0ubuntu0.18.04.173.0.3683.75-0ubuntu0.18.04.173.0.3683.86-0ubuntu0.18.04.174.0.3729.169-0ubuntu0.18.04.175.0.3770.90-0ubuntu0.18.04.175.0.3770.142-0ubuntu0.18.04.176.0.3809.87-0ubuntu0.18.04.176.0.3809.100-0ubuntu0.18.04.177.0.3865.90-0ubuntu0.18.04.178.0.3904.70-0ubuntu0.18.04.278.0.3904.97-0ubuntu0.18.04.178.0.3904.108-0ubuntu0.18.04.179.0.3945.79-0ubuntu0.18.04.179.0.3945.130-0ubuntu0.18.04.180.0.3987.87-0ubuntu0.18.04.180.0.3987.149-0ubuntu0.18.04.180.0.3987.163-0ubuntu0.18.04.181.0.4044.122-0ubuntu0.18.04.181.0.4044.138-0ubuntu0.18.04.183.0.4103.61-0ubuntu0.18.04.184.0.4147.105-0ubuntu0.18.04.185.0.4183.83-0ubuntu0.18.04.285.0.4183.121-0ubuntu0.18.04.186.0.4240.75-0ubuntu0.18.04.186.0.4240.198-0ubuntu0.18.04.187.0.4280.66-0ubuntu0.18.04.189.0.4389.82-0ubuntu0.18.04.1
90.0.4430.93-0ubuntu0.18.04.1
chromium
openSUSE:Leap 15.2
From an advisory covering 25 CVEs
 before 90.0.4430.93-lp152.2.89.1
90.0.4430.93-lp152.2.89.1
opera
openSUSE:Leap 15.2 NonFree
From an advisory covering 7 CVEs
 before 76.0.4017.107-lp152.2.46.1
76.0.4017.107-lp152.2.46.1
chromium
openSUSE:Tumbleweed
From an advisory covering 1081 CVEs
 before 93.0.4577.82-1.1
93.0.4577.82-1.1
chromium
openSUSE:Tumbleweed
From an advisory covering 2310 CVEs
 before 113.0.5672.92-1.1
113.0.5672.92-1.1

History

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

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

In short

CVE-2021-21228 is a medium vulnerability (CVSS 4.3) in Google Chrome, published April 30, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.06%, the 64th percentile. Fixed in chromium 90.0.4430.93-1.

References

Show 194 moreShow less
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Left out here: 18 versions and 2,130 references. The JSON record has them.

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