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Advisory record · GHSA-vhch-2wf3-m8rp

Netty: Denial of Service via Unbounded Headers in StompSubframeDecoder

CVSS 7.5 HighEPSS 0.0073 · 54th percentile

Published by the GitHub Advisory Database at 14 Jul 2026, 20:16 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
io.netty:netty-codec-stompMaven>=4.2.0.Alpha1, <4.2.16.Final || <4.1.136.Final4.2.16.Final, 4.1.136.Final
Identifiers
GHSA-vhch-2wf3-m8rp · CVE-2026-44891
Weakness (CWE)
CWE-400 · CWE-770
Tags
Published
14 Jul 2026
Updated
10 Sept 2026

Machine-written summary

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

Netty's netty-codec-stomp package, versions from 4.2.0.Alpha1 before 4.2.16.Final and from 4.1.0 before 4.1.136.Final, does not limit the total number of headers or their cumulative size in a STOMP frame. An attacker who can send STOMP messages to a server using StompSubframeDecoder can send many short headers in one frame, exhausting memory and causing a denial of service. Upgrade to 4.2.16.Final or 4.1.136.Final.

Written 2 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 (GitHub_M)
  • CISA KEV Not listed.
  • EPSS 0.0073, the 54th percentile, on 7 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 14:16 UTC First seen by agentprime
  2. 31 Oct 2026, 14:16 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.