# Possible code injection vulnerability in Rails / Active Storage

Advisory record · `GHSA-w749-p3v6-hccq`

- **Identifiers:** `GHSA-w749-p3v6-hccq` · `CVE-2022-21831`
- **State:** Confirmed
- **Severity:** CVSS 9.8 Critical
- **Critical:** Yes: CVSS 9+
- **Weakness (CWE):** [CWE-94](https://cwe.mitre.org/data/definitions/94.html)
- **Tags:** [Code injection](https://agentprime.io/advisories/tag/code-injection.md)
- **Published:** 8 Mar 2022
- **Updated:** 13 Mar 2026
- **Reviewed by a person:** No

Published by the GitHub Advisory Database at 8 Mar 2022, 21:25 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

## Critical

Critical, because:

- CVSS score 9.8: 9.0 or more.

How we decide what’s critical: <https://agentprime.io/advisories/critical.md>

## Affected packages

- `activestorage` (RubyGems): affected `>=5.2.0, <5.2.6.3 || >=6.0.0, <6.0.4.7 || >=6.1.0, <6.1.4.7 || >=7.0.0, <7.0.2.3`; fixed in `5.2.6.3`, `6.0.4.7`, `6.1.4.7`, `7.0.2.3`

## Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

## Severity and exploitation

- 9.8 Critical, CVSS 3.1: `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`, from GitHub Advisory Database

- **CISA KEV:** Not listed.
- **EPSS:** 0.031, the 87th percentile, on 9 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

## Timeline

This record came from the full history of the GitHub Advisory Database, published 8 Mar 2022. New records show when each source confirmed them.

## Sources

- [GitHub Advisory Database: GHSA-w749-p3v6-hccq](https://github.com/advisories/GHSA-w749-p3v6-hccq)
- [OSV: GHSA-w749-p3v6-hccq](https://osv.dev/vulnerability/GHSA-w749-p3v6-hccq)
- <https://nvd.nist.gov/vuln/detail/CVE-2022-21831>
- <https://github.com/rails/rails/commit/0a72f7d670e9aa77a0bb8584cb1411ddabb7546e>
- <https://github.com/advisories/GHSA-w749-p3v6-hccq>
- <https://github.com/rails/rails>
- <https://github.com/rubysec/ruby-advisory-db/blob/master/gems/activestorage/CVE-2022-21831.yml>
- <https://groups.google.com/g/rubyonrails-security/c/n-p-W1yxatI>
- <https://lists.debian.org/debian-lts-announce/2022/09/msg00002.html>
- <https://rubysec.com/advisories/CVE-2022-21831>
- <https://security.netapp.com/advisory/ntap-20221118-0001>
- <https://www.debian.org/security/2023/dsa-5372>

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.

## Check whether this affects you

A Match means an installed version is in the affected range above. Most don’t affect the app; agentprime hasn’t analysed this one yet.

- With the agentprime MCP server (<https://api.agentprime.io/mcp>), ask your agent to check the project: `check_lockfile` sends a lockfile, `check_packages` a list of installed packages, and both return the Matches and the upgrades that clear them. `get_advisory` returns this record. Setup: <https://agentprime.io/mcp.md>
- In a browser: <https://agentprime.io/check/> reads your lockfile in the browser, never uploading it.
- Whether it touches your code, with file and line: the Claude Code plugin, <https://agentprime.io/plugin.md>
- As JSON: <https://api.agentprime.io/v1/advisories/GHSA-w749-p3v6-hccq>, or `POST https://api.agentprime.io/v1/match` with your packages (<https://agentprime.io/api.md>)

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The web page: <https://agentprime.io/advisories/GHSA-w749-p3v6-hccq/>. Everything for agents: <https://agentprime.io/llms.txt>.