Out-of-bounds Write Affecting actions-runner package, versions <2.334.0-r0


Severity

Recommended
low

Based on default assessment until relevant scores are available.

Threat Intelligence

EPSS
0.06% (18th percentile)

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  • Snyk IDSNYK-CHAINGUARDLATEST-ACTIONSRUNNER-16436805
  • published6 May 2026
  • disclosed24 Apr 2026

Introduced: 24 Apr 2026

NewCVE-2026-41907  (opens in a new tab)
CWE-787  (opens in a new tab)
CWE-823  (opens in a new tab)

How to fix?

Upgrade Chainguard actions-runner to version 2.334.0-r0 or higher.

NVD Description

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

uuid is for the creation of RFC9562 (formerly RFC4122) UUIDs. Prior to 14.0.0, v3, v5, and v6 accept external output buffers but do not reject out-of-range writes (small buf or large offset). This allows silent partial writes into caller-provided buffers. This vulnerability is fixed in 14.0.0.

CVSS Base Scores

version 3.1