GitHub Advisoryadvisory · crates.io

GHSA-fp55-jw48-c537 astral-tokio-tar is Vulnerable to PAX Header Desynchronization

MEDIUM Published 2026-05-06 Modified 2026-05-06 Official page ↗
Ecosystem
crates.io
Packages
astral-tokio-tar
Severity
Moderate
CVSS vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U
Weaknesses
CWE-20, CWE-843
Reviewed
2026-05-06

Affected packages

• crates.io astral-tokio-tar: < 0.6.1 → fixed in 0.6.1

Description

Impact Versions of astral-tokio-tar prior to 0.6.1 contain a PAX header interpretation bug that allows manipulated entries to be made selectively visible or invisible during extraction with astral-tokio-tar versus other tar implementations. An attacker could use this differential to smuggle unexpected files onto a victim's filesystem. See GHSA-j5gw-2vrg-8fgx for a similar desynchronization bug in astral-tokio-tar. Patches Versions 0.6.1 and newer of astral-tokio-tar address this differential. Workarounds Users are advised to upgrade to version 0.6.1 or newer to address this advisory. There is no workaround other than upgrading. Users should experience no breaking changes as a result of the upgrade. Resources • GHSA-j5gw-2vrg-8fgx is a similar PAX desynchronization bug Attribution • Reporter: Adam Harvey (@lawngnome)

Related

Weakness · CWE (2)

  • CWE-20 Improper Input Validation weakness
  • CWE-843 Access of Resource Using Incompatible Type weakness

References