CVE-2022-21831

Possible code injection vulnerability in Rails / Active Storage

9.8 CriticalPublic exploitFix available

A code injection vulnerability exists in the Active Storage >= v5.2.0 that could allow an attacker to execute code via image_processing arguments.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: High
Integrity: High
Availability: High

Exploit likelihood

3.10%Up 0.5 points since May 27, 2022

What each source reports

NVD Score used 9.8

A code injection vulnerability exists in the Active Storage >= v5.2.0 that could allow an attacker to execute code via image_processing arguments.

Record: CVE-2022-21831
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: 6.8 MediumAV:N/AC:M/Au:N/C:P/I:P/A:P
Weakness: CWE-94
Updated: 2026-11-02

CVE List No score

A code injection vulnerability exists in the Active Storage >= v5.2.0 that could allow an attacker to execute code via image_processing arguments.

Record: CVE-2022-21831
Weakness: CWE-94
Updated: 2026-11-02

EUVDEUVD-2022-1564 No score

A code injection vulnerability exists in the Active Storage >= v5.2.0 that could allow an attacker to execute code via image_processing arguments.

Record: EUVD-2022-1564
Updated: 2026-11-03

GitHub AdvisoriesGHSA-w749-p3v6-hccq 9.8

Possible code injection vulnerability in Rails / Active Storage

The Active Storage module of Rails starting with version 5.2.0 is possibly vulnerable to code injection. This issue was patched in versions 5.2.6.3, 6.0.4.7, 6.1.4.7, and 7.0.2.3. To work around this issue, applications should implement a strict allow-list on accepted transformation methods or arguments. Additionally, a strict ImageMagick security policy will help mitigate this issue.

Record: GHSA-w749-p3v6-hccq
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-94
Updated: 2026-11-02

OSV 9.8

A code injection vulnerability exists in the Active Storage >= v5.2.0 that could allow an attacker to execute code via image_processing arguments.

Record: CVE-2022-21831
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

OSVDEBIAN-CVE-2022-21831 9.8

A code injection vulnerability exists in the Active Storage >= v5.2.0 that could allow an attacker to execute code via image_processing arguments.

Record: DEBIAN-CVE-2022-21831
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: 2026-11-03

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OSVGHSA-w749-p3v6-hccq 9.8

Possible code injection vulnerability in Rails / Active Storage

Record: GHSA-w749-p3v6-hccq
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-94
Updated: 2026-11-02

OSVUBUNTU-CVE-2022-21831 9.8

A code injection vulnerability exists in the Active Storage >= v5.2.0 that could allow an attacker to execute code via image_processing arguments.

Record: UBUNTU-CVE-2022-21831
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

OSVopenSUSE-SU-2024:11903-1 No score

ruby3.1-rubygem-activestorage-7.0-7.0.2.3-1.1 on GA media

These are all security issues fixed in the ruby3.1-rubygem-activestorage-7.0-7.0.2.3-1.1 package on the GA media of openSUSE Tumbleweed.

Record: openSUSE-SU-2024:11903-1
Updated: 2026-11-02

OSVopenSUSE-SU-2024:12880-1 No score

ruby3.2-rubygem-activestorage-7.0-7.0.4.3-1.1 on GA media

These are all security issues fixed in the ruby3.2-rubygem-activestorage-7.0-7.0.4.3-1.1 package on the GA media of openSUSE Tumbleweed.

Record: openSUSE-SU-2024:12880-1
Updated: 2026-11-02

OSVopenSUSE-SU-2024:14070-1 No score

ruby3.3-rubygem-activestorage-7.0-7.0.8.4-1.1 on GA media

These are all security issues fixed in the ruby3.3-rubygem-activestorage-7.0-7.0.8.4-1.1 package on the GA media of openSUSE Tumbleweed.

Record: openSUSE-SU-2024:14070-1
Updated: 2026-11-02

OSVopenSUSE-SU-2025:15113-1 No score

ruby3.4-rubygem-activestorage-7.0-7.0.8.6-1.3 on GA media

These are all security issues fixed in the ruby3.4-rubygem-activestorage-7.0-7.0.8.6-1.3 package on the GA media of openSUSE Tumbleweed.

Record: openSUSE-SU-2025:15113-1
Updated: 2026-11-02

Affected products

Affected packages

Affected packages
Package	Affected	Fixed
`activestorage` RubyGems	5.2.0 to 5.2.6.2	5.2.6.3
`activestorage` RubyGems	6.0.0 to 6.0.4.6	6.0.4.7
`activestorage` RubyGems	6.1.0 to 6.1.4.6	6.1.4.7
`activestorage` RubyGems	7.0.0 to 7.0.2.2	7.0.2.3
`rails` Debian:12	before 2:6.1.4.7+dfsg-1	2:6.1.4.7+dfsg-1
`rails` Debian:13	before 2:6.1.4.7+dfsg-1	2:6.1.4.7+dfsg-1
`rails` Debian:14	before 2:6.1.4.7+dfsg-1	2:6.1.4.7+dfsg-1
`rails` Debian:10 From an advisory covering 4 CVEs	before 2:5.2.2.1+dfsg-1+deb10u4, plus listed versions 2:5.2.2.1+dfsg-12:5.2.2.1+dfsg-1+deb10u12:5.2.2.1+dfsg-1+deb10u22:5.2.2.1+dfsg-1+deb10u3	2:5.2.2.1+dfsg-1+deb10u4
`rails` Debian:11 From an advisory covering 10 CVEs	before 2:6.0.3.7+dfsg-2+deb11u1, plus listed versions 2:6.0.3.7+dfsg-2	2:6.0.3.7+dfsg-2+deb11u1
`activestorage` RubyGems	5.2.0 up to 5.2.6.3, plus listed versions 5.2.15.2.1.15.2.1.rc15.2.25.2.2.1 Show 15 moreShow less 5.2.2.rc15.2.35.2.3.rc15.2.45.2.4.15.2.4.25.2.4.35.2.4.45.2.4.55.2.4.65.2.4.rc15.2.55.2.65.2.6.15.2.6.2	5.2.6.3

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Affected packages
Package	Affected	Fixed
`activestorage` RubyGems	6.0.0 up to 6.0.4.7, plus listed versions 6.0.16.0.1.rc16.0.26.0.2.16.0.2.2 Show 18 moreShow less 6.0.2.rc16.0.2.rc26.0.36.0.3.16.0.3.26.0.3.36.0.3.46.0.3.56.0.3.66.0.3.76.0.3.rc16.0.46.0.4.16.0.4.26.0.4.36.0.4.46.0.4.56.0.4.6	6.0.4.7
`activestorage` RubyGems	6.1.0 up to 6.1.4.7, plus listed versions 6.1.16.1.26.1.2.16.1.36.1.3.1 Show 8 moreShow less 6.1.3.26.1.46.1.4.16.1.4.26.1.4.36.1.4.46.1.4.56.1.4.6	6.1.4.7
`activestorage` RubyGems	7.0.0 up to 7.0.2.3, plus listed versions 7.0.17.0.27.0.2.17.0.2.2	7.0.2.3
`rails` Ubuntu:Pro:16.04:LTS	All versions, plus listed versions 2:4.1.10-12:4.2.5-12:4.2.5.1-12:4.2.5.2-22:4.2.6-12:4.2.6-1ubuntu0.1~esm12:4.2.6-1ubuntu0.1~esm2	None known
`rails` Ubuntu:Pro:18.04:LTS	All versions, plus listed versions 2:4.2.9-22:4.2.9-42:4.2.10-0ubuntu42:4.2.10-0ubuntu4+esm12:4.2.10-0ubuntu4+esm2	None known
`rails` Ubuntu:Pro:20.04:LTS	All versions, plus listed versions 2:5.2.2.1+dfsg-1ubuntu12:5.2.3+dfsg-32:5.2.3+dfsg-3ubuntu0.1~esm1	None known
`rails` Ubuntu:Pro:22.04:LTS	All versions, plus listed versions 2:6.0.3.7+dfsg-22:6.1.4.1+dfsg-8ubuntu22:6.1.4.1+dfsg-8ubuntu2+esm1	None known
`rails` Ubuntu:24.04:LTS	All versions, plus listed versions 2:6.1.7.3+dfsg-2build12:6.1.7.3+dfsg-3	None known
`rails` Ubuntu:25.10	All versions, plus listed versions 2:6.1.7.3+dfsg-72:7.2.2.1+dfsg-7	None known
`rails` Ubuntu:26.10	All versions, plus listed versions 2:7.2.3+dfsg-22:7.2.3.2+dfsg-2	None known
`rails` Ubuntu:26.04:LTS	All versions, plus listed versions 2:7.2.2.1+dfsg-72:7.2.2.2+dfsg-22:7.2.3+dfsg-2	None known
`rubygem-activestorage-7.0` openSUSE:Tumbleweed	before 7.0.2.3-1.1	7.0.2.3-1.1
`ruby3.2-rubygem-activestorage-7.0` openSUSE:Tumbleweed	before 7.0.4.3-1.1	7.0.4.3-1.1
`rubygem-activestorage-7.0` openSUSE:Tumbleweed	before 7.0.8.4-1.1	7.0.8.4-1.1
`rubygem-activestorage-7.0` openSUSE:Tumbleweed	before 7.0.8.6-1.3	7.0.8.6-1.3

Public exploits

Links only. Every CVE stores no exploit code.

Public exploits
Source	Link	Date
PoC in GitHub	usutani/study-turbolinks-link	2020-04-05

History

History
Recorded	Changed	Sources
Nov 6, 2026	affected, facts	OSV
Nov 3, 2026	aliases, products	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD, OSV, PoC in GitHub

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

In short

CVE-2022-21831 is a critical vulnerability (CVSS 9.8) in Rubyonrails Active Storage, published March 8, 2022. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 3.10%, the 87th percentile. Fixed in activestorage 5.2.6.3.

References

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