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Advisory record · GHSA-w6qf-42m7-vh68

Undertow Uncontrolled Resource Consumption Vulnerability

CVSS 7.5 HighEPSS 0.046 · 91st percentile

Published by the GitHub Advisory Database at 20 Feb 2024, 00:30 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
io.undertow:undertow-coreMaven>=2.3.0.Final, <2.3.12.Final || <2.2.31.Final2.3.12.Final, 2.2.31.Final
Identifiers
GHSA-w6qf-42m7-vh68 · CVE-2024-1635
Weakness (CWE)
CWE-400
Tags
Published
20 Feb 2024
Updated
28 Apr 2025

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

Undertow versions 2.3.0.Final up to but not including 2.3.12.Final, and versions before 2.2.31.Final, are affected by an uncontrolled resource consumption flaw in undertow-core. The affected servers support the wildfly-http-client protocol. A remote attacker who repeatedly opens and immediately closes connections to the HTTP port can leak connections until memory and open file limits are exhausted. Upgrade undertow-core to 2.3.12.Final or 2.2.31.Final.

Written 7 Nov 2026.

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

ScoreRatingCVSSVectorSource
7.5 High 3.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CNA (redhat)
  • CISA KEV Not listed.
  • EPSS 0.046, the 91st percentile, on 14 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 19 Feb 2024, 21:23 UTC Confirmed by the CVE List
  2. 19 Feb 2024, 22:15 UTC Confirmed by NVD
  3. 31 Oct 2026, 15:11 UTC First seen by agentprime
  4. 31 Oct 2026, 15:11 UTC Confirmed by OSV

Sources

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.