Directory Traversal Affecting zarf package, versions <0.81.1-r0


Severity

Recommended
low

Based on default assessment until relevant scores are available.

Threat Intelligence

EPSS
0.35% (27th percentile)

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  • Snyk IDSNYK-CHAINGUARDLATEST-ZARF-18014983
  • published18 Jul 2026
  • disclosed17 Jul 2026

Introduced: 17 Jul 2026

NewCVE-2026-50163  (opens in a new tab)
CWE-22  (opens in a new tab)
CWE-59  (opens in a new tab)

How to fix?

Upgrade Chainguard zarf to version 0.81.1-r0 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream zarf package and not the zarf 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 2.6.2, ensureLinkPath in content/file/utils.go:262-275 validates a hardlink target relative to the extract base but returns the unresolved target, causing os.Link("victim.secret", "<extract_base>/payload.tar.gz/evil_cwd_link") to resolve header.Linkname against the process current working directory for a Typeflag=TypeLink entry such as Name=payload.tar.gz/evil_cwd_link and Linkname="victim.secret" with io.deis.oras.content.unpack: "true", which can expose or tamper with files such as .env, .git/config, .aws/credentials, and ~/.ssh/config. This issue is fixed in version 2.6.2.

CVSS Base Scores

version 3.1