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Advisory record · GHSA-3g6h-r5qx-f6hq

Peer minimum ACK delay can panic quinn-proto when ACK_FREQUENCY transmission is enabled

CVSS 7.5 High

Published by the GitHub Advisory Database at 14 Sept 2026, 12:00 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
quinn-protocrates.io>=0.11.0, <0.11.180.11.18
Identifiers
GHSA-3g6h-r5qx-f6hq · RUSTSEC-2026-0340
Published
14 Sept 2026
Updated
12 Oct 2026

Machine-written summary

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

Peer-supplied transport parameters can make quinn-proto panic: versions 0.11.0 up to but not including 0.11.18 of the quinn-proto crate are affected when sending ACK_FREQUENCY frames is enabled through the transport configuration. A remote peer that advertises a minimum ACK delay greater than its maximum ACK delay can trigger a panic while the connection is being driven, which crashes the process. Sending ACK_FREQUENCY frames is disabled by default, so only endpoints that opt in are affected. Upgrade quinn-proto to version 0.11.18 or later.

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
7.5 High 3.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H OSV
  • CISA KEV Not listed.
  • EPSS No score.

Timeline

  1. 31 Oct 2026, 14:24 UTC First seen by agentprime
  2. 31 Oct 2026, 14:24 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.