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Advisory record · GHSA-xpw8-rcwv-8f8p

io.netty:netty-codec-http2 vulnerable to HTTP/2 Rapid Reset Attack

CVSS 7.5 High

Published by the GitHub Advisory Database at 10 Oct 2023, 22:22 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
io.netty:netty-codec-http2Maven<4.1.100.Final4.1.100.Final
Identifiers
GHSA-xpw8-rcwv-8f8p
Weakness (CWE)
CWE-400
Tags
Published
10 Oct 2023
Updated
10 Sept 2026

Machine-written summary

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

The io.netty:netty-codec-http2 package before 4.1.100.Final is vulnerable to HTTP/2 Rapid Reset attacks. A remote client can send a large number of RST frames to overload an HTTP/2 server, causing heavy load and a denial of service. Upgrade to 4.1.100.Final or later; if upgrading is not possible, limit the number of RST frames accepted per connection over a time window in your own frame listener or channel handler.

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 GitHub Advisory Database
  • CISA KEV Not listed.
  • EPSS No score.

Timeline

  1. 31 Oct 2026, 14:18 UTC First seen by agentprime
  2. 31 Oct 2026, 14:18 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.