# Rack vulnerable to Denial of Service via large parameter depth request

Advisory record · `GHSA-rgr4-9jh5-j4j6`

- **Identifiers:** `GHSA-rgr4-9jh5-j4j6` · `CVE-2015-3225`
- **State:** Confirmed
- **Severity:** No CVSS score
- **Critical:** No
- **Published:** 24 Oct 2017
- **Updated:** 3 Dec 2024
- **Reviewed by a person:** No

Published by the GitHub Advisory Database at 24 Oct 2017, 18:33 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

## Affected packages

- `rack` (RubyGems): affected `>=1.5.0, <1.5.4 || >=1.6.0, <1.6.2 || >=1.4.0, <1.4.6`; fixed in `1.5.4`, `1.6.2`, `1.4.6`

## 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

No source has published a CVSS score for this record yet.

- **CISA KEV:** Not listed.
- **EPSS:** 0.079, the 94th percentile, on 10 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 24 Oct 2017. New records show when each source confirmed them.

## Sources

- [GitHub Advisory Database: GHSA-rgr4-9jh5-j4j6](https://github.com/advisories/GHSA-rgr4-9jh5-j4j6)
- [OSV: GHSA-rgr4-9jh5-j4j6](https://osv.dev/vulnerability/GHSA-rgr4-9jh5-j4j6)
- <https://nvd.nist.gov/vuln/detail/CVE-2015-3225>
- <https://github.com/rack/rack>
- <https://github.com/rack/rack/blob/master/HISTORY.md>
- <https://github.com/rubysec/ruby-advisory-db/blob/master/gems/rack/CVE-2015-3225.yml>
- <https://groups.google.com/forum/#!topic/ruby-security-ann/gcUbICUmKMc>
- <http://lists.fedoraproject.org/pipermail/package-announce/2015-August/164173.html>
- <http://lists.fedoraproject.org/pipermail/package-announce/2015-August/165180.html>
- <http://lists.opensuse.org/opensuse-updates/2015-07/msg00040.html>
- <http://lists.opensuse.org/opensuse-updates/2015-07/msg00043.html>
- <http://lists.opensuse.org/opensuse-updates/2015-07/msg00044.html>
- <http://openwall.com/lists/oss-security/2015/06/16/14>
- <http://rhn.redhat.com/errata/RHSA-2015-2290.html>

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-rgr4-9jh5-j4j6>, or `POST https://api.agentprime.io/v1/match` with your packages (<https://agentprime.io/api.md>)

---

The web page: <https://agentprime.io/advisories/GHSA-rgr4-9jh5-j4j6/>. Everything for agents: <https://agentprime.io/llms.txt>.