{"id":"CVE-2025-62518","revision":"b0203507f1754183b0883c112a3da40d","records":[{"revision":"b0203507f1754183b0883c112a3da40d","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2025-62518","aliases":[],"title":"astral-tokio-tar Vulnerable to PAX Header Desynchronization","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.","state":0,"publishedAt":"2025-10-21T16:13:02.646+00:00","modifiedAt":"2025-10-22T13:23:33.408+00:00","affected":[{"ecosystem":"Vendor product","name":"tokio-tar","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"astral-sh\",\n                    \"product\": \"tokio-tar\",\n                    \"versions\": [\n                        {\n                            \"version\": \"< 0.5.6\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N","score":8.1,"severity":"HIGH"}],"references":["https://github.com/astral-sh/tokio-tar/security/advisories/GHSA-j5gw-2vrg-8fgx","https://github.com/astral-sh/uv/security/advisories/GHSA-w476-p2h3-79g9","https://github.com/astral-sh/tokio-tar/commit/22b3f884adb7a2adf1d3a8d03469533f5cbc8318","https://edera.dev/stories/tarmageddon","https://github.com/edera-dev/cve-tarmageddon"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2025-62518","license":"CVE Program Terms of Use","key":"cve-program:CVE-2025-62518","identifiers":["CVE-2025-62518"]},"retained":false,"historicalAffected":[]}],"coverage":[]}