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Advisory record · GHSA-f659-372h-6x3x

netty-incubator-codec-ohttp's HPKEContext operations may produce empty byte[] on failures

CVSS 6.9 MediumEPSS 0.0019 · 9th percentile

Published by the GitHub Advisory Database at 26 May 2026, 23:08 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<0.0.21.Final0.0.21.Final
Identifiers
GHSA-f659-372h-6x3x · CVE-2026-41207
Weakness (CWE)
CWE-330
Tags
Published
26 May 2026
Updated
9 Jun 2026

Machine-written summary

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

Versions of io.netty.incubator:netty-incubator-codec-ohttp before 0.0.21.Final have HPKEContext operations that can return an all-zero byte array when an internal key derivation or export step fails, with no error signalled to the caller. Because that output is used as key material for the response AEAD, the resulting key could be predictable to an attacker. Upgrade to 0.0.21.Final or later. No workaround is listed.

Written 3 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
6.9 Medium 4.0 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N CNA (GitHub_M)
  • CISA KEV Not listed.
  • EPSS 0.0019, the 9th percentile, on 10 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 14:20 UTC First seen by agentprime
  2. 31 Oct 2026, 14:20 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.