# URI gem has ReDoS vulnerability

Advisory record · `GHSA-hww2-5g85-429m`

- **Identifiers:** `GHSA-hww2-5g85-429m` · `CVE-2023-36617`
- **State:** Confirmed
- **Severity:** CVSS 5.3 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:** 29 Jun 2023
- **Updated:** 10 Sept 2026
- **Reviewed by a person:** No

Published by the GitHub Advisory Database at 29 Jun 2023, 15:30 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

## Affected packages

- `uri` (RubyGems): affected `>=0.10.1, <0.10.3 || >=0.12.0, <0.12.2 || >=0.11.0, <0.11.2 || <0.10.0.3`; fixed in `0.10.3`, `0.12.2`, `0.11.2`, `0.10.0.3`

## 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

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

- **CISA KEV:** Not listed.
- **EPSS:** 0.017, the 77th percentile, on 7 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

## 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-hww2-5g85-429m)

## Sources

- [GitHub Advisory Database: GHSA-hww2-5g85-429m](https://github.com/advisories/GHSA-hww2-5g85-429m)
- [OSV: GHSA-hww2-5g85-429m](https://osv.dev/vulnerability/GHSA-hww2-5g85-429m)
- <https://nvd.nist.gov/vuln/detail/CVE-2023-36617>
- <https://github.com/ruby/uri/commit/05b1e7d026b886e65a60ee35625229da9ec220bb>
- <https://github.com/ruby/uri/commit/38bf797c488bcb4a37fb322bfa84977981863ec6>
- <https://github.com/ruby/uri/commit/3cd938df20db26c9439e9f681aadfb9bbeb6d1c0>
- <https://github.com/ruby/uri/commit/4d02315181d8a485496f1bb107a6ab51d6f3a35f>
- <https://github.com/ruby/uri/commit/70794abc162bb15bb934713b5669713d6700d35c>
- <https://github.com/ruby/uri/commit/7e33934c91b7f8f3ea7b7a4258b468e19f636bc3>
- <https://github.com/ruby/uri/commit/9a8e0cc03da964054c2a4ea26b59c53c3bae4921>
- <https://github.com/ruby/uri/commit/ba36c8a3ecad8c16dd3e60a6da9abd768206c8fa>
- <https://www.ruby-lang.org/en/news/2023/06/29/redos-in-uri-CVE-2023-36617>
- <https://security.netapp.com/advisory/ntap-20230725-0002>
- <https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/27LUWREIFTP3MQAW7QE4PJM4DPAQJWXF>

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-hww2-5g85-429m>, or `POST https://api.agentprime.io/v1/match` with your packages (<https://agentprime.io/api.md>)

---

The web page: <https://agentprime.io/advisories/GHSA-hww2-5g85-429m/>. Everything for agents: <https://agentprime.io/llms.txt>.