Missing Authorization Affecting k9s package, versions <0.50.18-r28


Severity

Recommended
low

Based on default assessment until relevant scores are available.

Threat Intelligence

Social Trends
EPSS
0.37% (30th percentile)

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  • Snyk IDSNYK-WOLFILATEST-K9S-16902944
  • published27 May 2026
  • disclosed22 May 2026

Introduced: 22 May 2026

CVE-2026-39831  (opens in a new tab)
CWE-862  (opens in a new tab)

How to fix?

Upgrade Wolfi k9s to version 0.50.18-r28 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream k9s package and not the k9s package as distributed by Wolfi. See How to fix? for Wolfi relevant fixed versions and status.

The Verify() method for FIDO/U2F security key types (sk-ecdsa-sha2-nistp256@openssh.com, sk-ssh-ed25519@openssh.com) did not check the User Presence flag. Signatures generated without physical touch were accepted, allowing unattended use of a hardware security key. To restore the previous behavior, return a "no-touch-required" extension in Permissions.Extensions from PublicKeyCallback.

CVSS Base Scores

version 3.1