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Advisory record · GHSA-vmr9-j6wf-pmh2

netty-incubator-codec-ohttp: [OHttpServerCodec] Native Direct-Memory Leak on AEAD Decryption Failure Leads to Gateway Denial of Service

CVSS 8.7 HighEPSS 0.0051 · 43rd percentile

Published by the GitHub Advisory Database at 20 Aug 2026, 18:39 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
io.netty.incubator:netty-incubator-codec-ohttpMaven<0.0.23.Final0.0.23.Final
Identifiers
GHSA-vmr9-j6wf-pmh2 · CVE-2026-54251
Weakness (CWE)
CWE-664
Tags
Published
20 Aug 2026
Updated
20 Aug 2026

Machine-written summary

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

Versions of netty-incubator-codec-ohttp before 0.0.23.Final are affected. When the OHTTP gateway receives an encrypted request that fails AEAD tag verification, a native direct-memory buffer allocated for the plaintext is never released, so an unauthenticated remote client can repeatedly send invalid ciphertext to exhaust native memory and cause a denial of service. Upgrade to 0.0.23.Final or later. The source gives few details on any workaround.

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
8.7 High 4.0 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N CNA (GitHub_M)
  • CISA KEV Not listed.
  • EPSS 0.0051, the 43rd percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 14:19 UTC First seen by agentprime
  2. 31 Oct 2026, 14:19 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.