{"id":"CVE-2025-62518","aliases":["GHSA-j5gw-2vrg-8fgx","RUSTSEC-2025-0110","RUSTSEC-2025-0111"],"url":"https://o3.security/vulnerability/CVE-2025-62518","summary":"astral-tokio-tar Vulnerable to PAX Header Desynchronization","details":"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.","published":"2025-10-21T16:13:02.646Z","modified":"2026-07-15T01:48:57.784051543Z","cvss":{"score":8.1,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":1,"affectedPackages":[{"ecosystem":"crates.io","name":"astral-tokio-tar","fixedVersion":"0.5.6"},{"ecosystem":"crates.io","name":"tokio-tar","fixedVersion":null}],"fix":{"url":"https://github.com/astral-sh/tokio-tar/commit/22b3f884adb7a2adf1d3a8d03469533f5cbc8318","label":"astral-sh/tokio-tar@22b3f88"},"references":[{"type":"WEB","url":"https://edera.dev/stories/tarmageddon"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/62xxx/CVE-2025-62518.json"},{"type":"ADVISORY","url":"https://github.com/astral-sh/tokio-tar/security/advisories/GHSA-j5gw-2vrg-8fgx"},{"type":"ADVISORY","url":"https://github.com/astral-sh/uv/security/advisories/GHSA-w476-p2h3-79g9"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-62518"},{"type":"FIX","url":"https://github.com/astral-sh/tokio-tar/commit/22b3f884adb7a2adf1d3a8d03469533f5cbc8318"},{"type":"PACKAGE","url":"https://github.com/edera-dev/cve-tarmageddon"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-15T01:48:57.784051543Z"}}