Improper Certificate Validation Affecting skaffold package, versions <2.21.0-r3


Severity

Recommended
low

Based on default assessment until relevant scores are available.

Threat Intelligence

Social Trends
EPSS
0.5% (41st percentile)

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  • Snyk IDSNYK-CHAINGUARDLATEST-SKAFFOLD-16915183
  • published28 May 2026
  • disclosed22 May 2026

Introduced: 22 May 2026

CVE-2026-39835  (opens in a new tab)
CWE-295  (opens in a new tab)

How to fix?

Upgrade Chainguard skaffold to version 2.21.0-r3 or higher.

NVD Description

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

SSH servers which use CertChecker as a public key callback without setting IsUserAuthority or IsHostAuthority could be caused to panic by a client presenting a certificate. CertChecker now returns an error instead of panicking when these callbacks are nil.

References

CVSS Base Scores

version 3.1