CVE-2026-78662 Affecting aactl package, versions <0.4.12-r75


Severity

Recommended
low

Based on default assessment until relevant scores are available.

Threat Intelligence

EPSS
0.32% (24th percentile)

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  • Snyk IDSNYK-CHAINGUARDLATEST-AACTL-19531298
  • published4 Sept 2026
  • disclosed2 Sept 2026

Introduced: 2 Sep 2026

NewCVE-2026-78662  (opens in a new tab)

How to fix?

Upgrade Chainguard aactl to version 0.4.12-r75 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream aactl package and not the aactl package as distributed by Chainguard. See How to fix? for Chainguard relevant fixed versions and status.

Previously, a channel registered in the mux's chanList is not usable until it is established. A malicious peer was able flood the channel's incomingRequests, deadlocking the entire connection. Now, we add an atomic established state, set when a channel becomes usable. Until such a time, handlePacket drops every packet other than the open confirmation/failure, without blocking and without tearing down the connection.

CVSS Base Scores

version 3.1