# Possible ReDoS vulnerability in HTTP Token authentication in Action Controller

Advisory record · `GHSA-vfg9-r3fq-jvx4`

- **Identifiers:** `GHSA-vfg9-r3fq-jvx4` · `BIT-rails-2024-47887` · `CVE-2024-47887`
- **State:** Confirmed
- **Severity:** CVSS 6.6 Medium
- **Critical:** No
- **Weakness (CWE):** [CWE-1333](https://cwe.mitre.org/data/definitions/1333.html)
- **Tags:** [Denial of service](https://agentprime.io/advisories/tag/dos.md)
- **Published:** 15 Oct 2024
- **Updated:** 31 Oct 2024
- **Reviewed by a person:** No

Published by the GitHub Advisory Database at 15 Oct 2024, 23:35 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

## Affected packages

- `actionpack` (RubyGems): affected `>=4.0.0, <6.1.7.9 || >=7.0.0, <7.0.8.5 || >=7.1.0, <7.1.4.1 || >=7.2.0, <7.2.1.1`; fixed in `6.1.7.9`, `7.0.8.5`, `7.1.4.1`, `7.2.1.1`

## 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

- 6.6 Medium, CVSS 4.0: `CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U`, from CNA (GitHub_M)

- **CISA KEV:** Not listed.
- **EPSS:** 0.010, the 64th percentile, on 6 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 15 Oct 2024. New records show when each source confirmed them.

## Sources

- [GitHub Advisory Database: GHSA-vfg9-r3fq-jvx4](https://github.com/advisories/GHSA-vfg9-r3fq-jvx4)
- [OSV: GHSA-vfg9-r3fq-jvx4](https://osv.dev/vulnerability/GHSA-vfg9-r3fq-jvx4)
- <https://github.com/rails/rails/security/advisories/GHSA-vfg9-r3fq-jvx4>
- <https://github.com/rails/rails>
- <https://github.com/rubysec/ruby-advisory-db/blob/master/gems/actionpack/CVE-2024-47887.yml>

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-vfg9-r3fq-jvx4>, or `POST https://api.agentprime.io/v1/match` with your packages (<https://agentprime.io/api.md>)

---

The web page: <https://agentprime.io/advisories/GHSA-vfg9-r3fq-jvx4/>. Everything for agents: <https://agentprime.io/llms.txt>.