CVE-2022-21831: Possible code injection vulnerability in Rails / Active Storage

Severity: critical (CVSS 9.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 3.1% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2022-05-26 · updated 2026-06-17
Weakness: CWE-94

Description

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

Affected products

Debian Linux: 10.0
rubyonrails Active Storage: from 5.2.0 before 5.2.6.3; from 6.0.0 before 6.0.4.7; from 6.1.0 before 6.1.4.7; from 7.0.0 before 7.0.2.3 — fixed in 5.2.6.3, 6.0.4.7, 6.1.4.7, 7.0.2.3
Rubygems Activestorage: from 5.2.0 before 5.2.6.3; from 6.0.0 before 6.0.4.7; from 6.1.0 before 6.1.4.7; from 7.0.0 before 7.0.2.3; 5.2.0, 5.2.1, 5.2.1.1, 5.2.1.rc1, 5.2.2, 5.2.2.1 (+58) — fixed in 5.2.6.3, 6.0.4.7, 6.1.4.7, 7.0.2.3

How to fix

Upgrade to a fixed version: rubyonrails Active Storage 5.2.6.3, 6.0.4.7, 6.1.4.7, 7.0.2.3; Rubygems Activestorage 5.2.6.3, 6.0.4.7, 6.1.4.7, 7.0.2.3. Check the vendor advisory for mitigations.

References

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