# Devise-Two-Factor vulnerable to brute force attacks

Advisory record · `GHSA-chcr-x7hc-8fp8` · Withdrawn

- **Identifiers:** `GHSA-chcr-x7hc-8fp8` · `CVE-2024-0227`
- **State:** Withdrawn
- **Severity:** CVSS 5.0 Medium
- **Critical:** No
- **Weakness (CWE):** [CWE-307](https://cwe.mitre.org/data/definitions/307.html)
- **Tags:** [Authentication bypass](https://agentprime.io/advisories/tag/auth-bypass.md)
- **Published:** 12 Jan 2024
- **Updated:** 10 Sept 2026
- **Reviewed by a person:** No

**Withdrawn.** The GitHub Advisory Database withdrew this advisory on 19 Mar 2024. The record stays here, marked withdrawn.

Published by the GitHub Advisory Database at 12 Jan 2024, 15:13 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

## Affected packages

- `devise-two-factor` (RubyGems): affected `>=1.0.0, <=5.0.0`; no fixed version yet

## 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

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

- **CISA KEV:** Not listed.
- **EPSS:** No score.

## Timeline

- 31 Oct 2026, 15:16 UTC: First seen by agentprime
- 31 Oct 2026, 15:16 UTC: [Confirmed by OSV](https://osv.dev/vulnerability/GHSA-chcr-x7hc-8fp8)

## Sources

- [GitHub Advisory Database: GHSA-chcr-x7hc-8fp8](https://github.com/advisories/GHSA-chcr-x7hc-8fp8)
- [OSV: GHSA-chcr-x7hc-8fp8](https://osv.dev/vulnerability/GHSA-chcr-x7hc-8fp8)
- <https://github.com/devise-two-factor/devise-two-factor/security/advisories/GHSA-chcr-x7hc-8fp8>
- <https://nvd.nist.gov/vuln/detail/CVE-2024-0227>
- <https://github.com/devise-two-factor/devise-two-factor>
- <https://github.com/rubysec/ruby-advisory-db/blob/master/gems/devise-two-factor/CVE-2024-0227.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-chcr-x7hc-8fp8>, 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-chcr-x7hc-8fp8/>. Everything for agents: <https://agentprime.io/llms.txt>.