{"id":"RUSTSEC-2026-0066","summary":"Insufficient validation of PAX extensions during extraction","details":"In versions 0.5.6 and earlier of astral-tokio-tar, malformed PAX extensions\nwere silently skipped when parsing tar archives. This silent skipping (rather\nthan rejection) of invalid PAX extensions could be used as a building block for\na parser differential, for example by silently skipping a malformed GNU \"long\nlink\" extension so that a subsequent parser would misinterpret the extension.\n\nIn practice, exploiting this behavior in astral-tokio-tar requires a secondary\nmisbehaving tar parser, i.e. one that insufficiently validates malformed PAX\nextensions and interprets them rather than skipping or erroring on them. This\nvulnerability is considered low-severity as it requires a separate\nvulnerability against any unrelated tar parser.\n\nThis issue has been fixed in version 0.6.0.","aliases":["CVE-2026-32766","GHSA-6gx3-4362-rf54"],"modified":"2026-03-23T09:56:17.487066Z","published":"2026-03-17T12:00:00Z","database_specific":{"license":"CC0-1.0"},"references":[{"type":"PACKAGE","url":"https://crates.io/crates/astral-tokio-tar"},{"type":"ADVISORY","url":"https://rustsec.org/advisories/RUSTSEC-2026-0066.html"}],"affected":[{"package":{"name":"astral-tokio-tar","ecosystem":"crates.io","purl":"pkg:cargo/astral-tokio-tar"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0.0.0-0"},{"fixed":"0.6.0"}]}],"ecosystem_specific":{"affected_functions":null,"affects":{"arch":[],"functions":[],"os":[]}},"database_specific":{"categories":[],"cvss":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U","informational":null,"source":"https://github.com/rustsec/advisory-db/blob/osv/crates/RUSTSEC-2026-0066.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U"}]}