# Undertow vulnerable to denial of service

Advisory record · `GHSA-65h2-wf7m-q2v8`

- **Identifiers:** `GHSA-65h2-wf7m-q2v8` · `CVE-2023-3223`
- **State:** Confirmed
- **Severity:** CVSS 7.5 High
- **Critical:** No
- **Weakness (CWE):** [CWE-400](https://cwe.mitre.org/data/definitions/400.html) · [CWE-789](https://cwe.mitre.org/data/definitions/789.html)
- **Tags:** [Denial of service](https://agentprime.io/advisories/tag/dos.md)
- **Published:** 27 Sept 2023
- **Updated:** 3 May 2024
- **Reviewed by a person:** No

Published by the GitHub Advisory Database at 27 Sept 2023, 15:30 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

## Affected packages

- `io.undertow:undertow-parent` (Maven): affected `<2.2.24.Final`; fixed in `2.2.24.Final`

## 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

- 7.5 High, CVSS 3.1: `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H`, from CNA (redhat)

- **CISA KEV:** Not listed.
- **EPSS:** 0.027, the 85th percentile, on 14 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

## Timeline

- 31 Oct 2026, 15:13 UTC: First seen by agentprime
- 31 Oct 2026, 15:13 UTC: [Confirmed by OSV](https://osv.dev/vulnerability/GHSA-65h2-wf7m-q2v8)

## Sources

- [GitHub Advisory Database: GHSA-65h2-wf7m-q2v8](https://github.com/advisories/GHSA-65h2-wf7m-q2v8)
- [OSV: GHSA-65h2-wf7m-q2v8](https://osv.dev/vulnerability/GHSA-65h2-wf7m-q2v8)
- <https://nvd.nist.gov/vuln/detail/CVE-2023-3223>
- <https://access.redhat.com/errata/RHSA-2023:4505>
- <https://access.redhat.com/errata/RHSA-2023:4506>
- <https://access.redhat.com/errata/RHSA-2023:4507>
- <https://access.redhat.com/errata/RHSA-2023:4509>
- <https://access.redhat.com/errata/RHSA-2023:4918>
- <https://access.redhat.com/errata/RHSA-2023:4919>
- <https://access.redhat.com/errata/RHSA-2023:4920>
- <https://access.redhat.com/errata/RHSA-2023:4921>
- <https://access.redhat.com/errata/RHSA-2023:4924>
- <https://access.redhat.com/errata/RHSA-2023:7247>
- <https://access.redhat.com/security/cve/CVE-2023-3223>

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-65h2-wf7m-q2v8>, 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-65h2-wf7m-q2v8/>. Everything for agents: <https://agentprime.io/llms.txt>.