{"cve":"CVE-2026-32766","nvd":{"published":"2026-03-20T00:16:18.100","modified":"2026-06-17T10:36:20.847","status":"Analyzed","description":"astral-tokio-tar is a tar archive reading/writing library for async Rust. In versions 0.5.6 and earlier, malformed PAX extensions were silently skipped when parsing tar archives. This silent skipping (rather than rejection) of invalid PAX extensions could be used as a building block for a parser differential, for example by silently skipping a malformed GNU “long link” extension so that a subsequent parser would misinterpret the extension. In practice, exploiting this behavior in astral-tokio-tar requires a secondary misbehaving tar parser, i.e. one that insufficiently validates malformed PAX extensions and interprets them rather than skipping or erroring on them. This vulnerability is considered low-severity as it requires a separate vulnerability against any unrelated tar parser. This issue has been fixed in version 0.6.0.","cvss_v4":{"vector":"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","score":1.7},"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","score":5.3},"cwes":["CWE-436"],"references":["https://github.com/astral-sh/tokio-tar/commit/e5e0139cae4577eeedf5fc16b65e690bf988ce52","https://github.com/astral-sh/tokio-tar/security/advisories/GHSA-6gx3-4362-rf54"],"products":["astral:astral-tokio-tar"],"source":"nvd","synced_at":"2026-10-19T22:26:19.218427112+00:00"},"epss":{"cve":"CVE-2026-32766","score":0.00253,"percentile":0.1685,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-6gx3-4362-rf54","url":"https://osv.dev/vulnerability/GHSA-6gx3-4362-rf54","summary":"astral-tokio-tar insufficiently validates PAX extensions during extraction","modified":"2026-09-10T03:50:37.790948185Z","packages":[{"ecosystem":"crates.io","name":"astral-tokio-tar","purl":"pkg:cargo/astral-tokio-tar","ranges":["<0.6.0"],"fixed":["0.6.0"]}]},{"id":"RUSTSEC-2026-0066","url":"https://osv.dev/vulnerability/RUSTSEC-2026-0066","summary":"Insufficient validation of PAX extensions during extraction","modified":"2026-03-23T09:56:17.487066Z","packages":[{"ecosystem":"crates.io","name":"astral-tokio-tar","purl":"pkg:cargo/astral-tokio-tar","ranges":[">=0.0.0-0 <0.6.0"],"fixed":["0.6.0"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}