CVE-2025-62518HIGH 8.1EPSS p47.8%

CVE-2025-62518CVE-2025-62518

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.

Scoring

CVSS 3.18.1 (HIGH)
VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
EPSS0.69% probability of exploitation · percentile 47.8% · 2026-06-18T12:00:27Z
Published2025-10-21
Last modified2026-04-15

Underlying weaknesses· 1

CWE-843

References

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

1

TypeTargetConfidenceTier
WeaknessAccess of Resource Using Incompatible Type ('Type Confusion')cwe-8430%live

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Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.