Vulnerability GHSA-fp55-jw48-c537

Medium Risk
MEDIUM RISK
CVSS Score: 6.0
Score Range: 4.0–6.9
Medium severity vulnerabilities (CVSS 4.0–6.9). Important issues that meaningfully reduce security confidence.
6 months ago
May 06, 2026 at 05:26 PM UTC
astral-tokio-tar is Vulnerable to PAX Header Desynchronization
0.5.0 - 0.6.1-rc1
0.5.0 - 0.6.1-rc1

Summary

astral-tokio-tar is Vulnerable to PAX Header Desynchronization

Details

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)

Impacted packages

Timeline

Published
6 months ago
May 06, 2026 at 05:26 PM UTC
Fixed (0.6.1)
6 months ago
April 27, 2026 at 06:22 PM UTC
Last Modified
1 month ago
September 10, 2026 at 03:50 AM UTC