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Directory Traversal Affecting guac package, versions <1.1.0-r25

Severity

 Recommended
low

Based on default assessment until relevant scores are available.

Threat Intelligence

EPSS
0.35% (28th percentile)

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  • Snyk IDSNYK-CHAINGUARDLATEST-GUAC-18598174
  • published9 Aug 2026
  • disclosed7 Aug 2026
Report a new vulnerability Found a mistake?

Introduced: 7 Aug 2026

NewCVE-2026-71557  (opens in a new tab)
CWE-22  (opens in a new tab)

How to fix?

Upgrade Chainguard guac to version 1.1.0-r25 or higher.

NVD Description

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

go-git is an extensible git implementation library written in pure Go. Prior to 5.19.2 and 6.0.0-alpha.5, reference names are not sanitized before being used to construct on-disk paths under the reference storage directory, so a maliciously crafted reference name (for example containing directory-traversal sequences) can cause go-git to write files outside the intended reference storage directory. Versions 5.19.2 and 6.0.0-alpha.5 fix the issue.