CVE-2022-21831
A public proof of concept exists; no exploitation attested.
- Published2022-05-26
- Fixed in7.0.2.3 · 6.1.4.7 · 6.0.4.7 · 5.2.6.3
- WeaknessCWE-94
Am I affected?
Debian, Ubuntu or Red Hat sometimes backport a fix without changing the upstream version number: such a version reads « to verify », never « affected ».With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.
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.
Timeline
dates in UTC- 2022-05-2617:15CVE publishedNVD
- 2026-10-2319:23First public proof of conceptPoC-in-GitHub
Observed activity
isMalicious corpus · updated 2026-10-23 18:48 UTCBlock these indicators
- Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2022-21831?format=txt
- CSV export: https://api.ismalicious.com/edl/cve/CVE-2022-21831?format=csv
- TAXII collection of exploited CVEs
- The EDL and CSV take an API key on the Pro plan.
Versions per branch
NVD| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 7.0 | ≥ 7.0.0, < 7.0.2.3 | 7.0.2.3 | NVD |
| 6.1 | ≥ 6.1.0, < 6.1.4.7 | 6.1.4.7 | NVD |
| 6.0 | ≥ 6.0.0, < 6.0.4.7 | 6.0.4.7 | NVD |
| 5.2 | ≥ 5.2.0, < 5.2.6.3 | 5.2.6.3 | NVD |
| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 10.0 | = 10.0 | no fix published | NVD |
as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.
Fix
- Update Rubyonrails active storage to 7.0.2.3 · 6.1.4.7 · 6.0.4.7 · 5.2.6.3
Advisories and patches
- github.comPatch
Detection
read 2026-10-23 19:23 UTC- Nuclei template
- none so far ProjectDiscovery
- Exploit-DB
- no entry Exploit-DB
Sources
- NVDCVSS 3.19.8read 2026-10-23
- NVDCVSS 2.06.8read 2026-10-23
- CNAweakness (CWE)CWE-94read 2026-10-23
- NVDweakness (CWE)CWE-94read 2026-10-23
- FIRST EPSSEPSS score3.1 %2026-10-22
- PoC-in-GitHubproof of concept1read 2026-10-23
Technical details
- CVSS v3 Vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Published
- 2022-05-26
- Last Modified
- 2026-06-17
- NVD status
- Modified
Frequently asked questions
What is CVE-2022-21831?
Is CVE-2022-21831 actively exploited?
What is the CVSS score for CVE-2022-21831?
Hear about the next vulnerability in your software
Surveillance reads the versions in your stack — a domain, a lockfile or a list — checks each CVE against the ranges its sources publish, and alerts you when one you run is exploited or enters CISA KEV. A version it cannot read stays « version not verified ».
No credit card required · No monthly cap on website lookups · 250 API requests/month
Go further
- Following what attackers exploit right now? The CISA KEV additions of the month, with their patch deadlines.
- Running this software? Vulnerability monitoring alerts you to new vulnerabilities in your products.
Related vulnerabilities
Same product first, then the same vendor advisory and the same publication week.