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Advisory record · GHSA-6ghj-frrj-jjj3

Netty has Unbounded Direct Memory Consumption in its RedisDecoder

CVSS 7.5 HighEPSS 0.0046 · 40th percentile

Published by the GitHub Advisory Database at 8 Jun 2026, 19:02 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
io.netty:netty-codec-redisMaven>=4.2.0.Final, <4.2.15.Final || <4.1.135.Final4.2.15.Final, 4.1.135.Final
Identifiers
GHSA-6ghj-frrj-jjj3 · CVE-2026-44890
Weakness (CWE)
CWE-400 · CWE-770
Tags
Published
8 Jun 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-redis package is affected in versions 4.2.0.Final up to but not including 4.2.15.Final, and in versions before 4.1.135.Final. An attacker who can send Redis protocol traffic to an application using RedisDecoder can send streams of digits without a line terminator across multiple connections, exhausting direct memory and denying service to legitimate clients. Upgrade to 4.2.15.Final or 4.1.135.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 0.0046, the 40th percentile, on 9 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.