CVE-2025-62518

HIGH EPSS 48.1%
Published Oct 21, 20258mo ago · Modified Jun 17, 20262w ago
8.1 CVSS 3.1
High
Find Similar
Published Oct 21, 2025 8mo ago
Last Modified Jun 17, 2026 2w ago

Description

astral-tokio-tar is a tar archive reading/writing library for async Rust. Versions of astral-tokio-tar prior to 0.5.6 contain a boundary parsing vulnerability that allows attackers to smuggle additional archive entries by exploiting inconsistent PAX/ustar header handling. When processing archives with PAX-extended headers containing size overrides, the parser incorrectly advances stream position based on ustar header size (often zero) instead of the PAX-specified size, causing it to interpret file content as legitimate tar headers. This issue has been patched in version 0.5.6. There are no workarounds.

CVSS Details

Base Score
8.1
Exploitability
2.8
Impact
5.2
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction Required
Scope Unchanged
Confidentiality High
Integrity High
Availability None

Threat Intelligence

EPSS Exploit Probability
48.1% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-843

References 5

  • edera.dev https://edera.dev/stories/tarmageddon
  • github.com https://github.com/astral-sh/tokio-tar/commit/22b3f884adb7a2adf1d3a8d03469533f5cbc8318
  • github.com https://github.com/astral-sh/tokio-tar/security/advisories/GHSA-j5gw-2vrg-8fgx
  • github.com https://github.com/astral-sh/uv/security/advisories/GHSA-w476-p2h3-79g9
  • github.com https://github.com/edera-dev/cve-tarmageddon

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.