Link Following Affecting k3s package, versions <1.35.3.1-r8


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.01% (1st percentile)

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  • Snyk IDSNYK-CHAINGUARDLATEST-K3S-16633724
  • published11 May 2026
  • disclosed7 May 2026

Introduced: 7 May 2026

NewCVE-2026-39819  (opens in a new tab)
CWE-59  (opens in a new tab)

How to fix?

Upgrade Chainguard k3s to version 1.35.3.1-r8 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream k3s package and not the k3s package as distributed by Chainguard. See How to fix? for Chainguard relevant fixed versions and status.

The "go bug" command writes to two files with predictable names in the system temporary directory (for example, "/tmp"). An attacker with access to the temporary directory can create a symlink in one of these names, causing "go bug" to overwrite the target of the symlink.

CVSS Base Scores

version 3.1