External Control of File Name or Path Affecting vcluster package, versions <0.35.1-r3


Severity

Recommended
low

Based on default assessment until relevant scores are available.

Threat Intelligence

EPSS
0.37% (30th percentile)

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  • Snyk IDSNYK-CHAINGUARDLATEST-VCLUSTER-17803244
  • published3 Jul 2026
  • disclosed17 Jul 2026

Introduced: 3 Jul 2026

NewCVE-2026-50162  (opens in a new tab)
CWE-73  (opens in a new tab)

How to fix?

Upgrade Chainguard vcluster to version 0.35.1-r3 or higher.

NVD Description

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

oras-go is a Go library for managing OCI artifacts. Prior to 2.6.1, resolveWritePath() in content/file/file.go uses a lexical filepath.Rel check for workingDir and does not account for symlink traversal, so when AllowPathTraversalOnWrite=false an attacker-controlled blob title through ocispec.AnnotationTitle such as out/pwn.txt can follow a workingDir symlink out -> /some/outside/dir and cause pushFile() to create /some/outside/dir/pwn.txt outside workingDir. This issue is fixed in version 2.6.1.

CVSS Base Scores

version 3.1