{"id":"CVE-2026-6967","aliases":["GHSA-4v58-8p28-2rq3"],"url":"https://o3.security/vulnerability/CVE-2026-6967","summary":"Missing Delegated Metadata Validation in awslabs/tough","details":"Missing expiration, hash, and length enforcement in delegated metadata validation in awslabs/tough before tough-v0.22.0 allows remote authenticated users with delegated signing authority to bypass TUF specification integrity checks for delegated targets metadata and poison the local metadata cache, because load_delegations does not apply the same validation checks as the top-level targets metadata path.\n\nWe recommend you upgrade to tough-v0.22.0 / tuftool-v0.15.0.","published":"2026-04-24T19:41:43.460Z","modified":"2026-08-12T03:51:14.956734909Z","cvss":null,"epss":{"score":0.00246,"percentile":0.16118,"asOf":"2026-09-17"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"crates.io","name":"tough","fixedVersion":"0.22.0"},{"ecosystem":"crates.io","name":"tuftool","fixedVersion":"0.15.0"}],"fix":null,"references":[{"type":"ADVISORY","url":"https://aws.amazon.com/security/security-bulletins/2026-019-aws/"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/6xxx/CVE-2026-6967.json"},{"type":"ADVISORY","url":"https://github.com/awslabs/tough/security/advisories/GHSA-4v58-8p28-2rq3"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-6967"},{"type":"FIX","url":"https://crates.io/crates/tough/0.22.0"},{"type":"FIX","url":"https://crates.io/crates/tuftool/0.15.0"},{"type":"FIX","url":"https://github.com/awslabs/tough/releases/tag/tough-v0.22.0"},{"type":"FIX","url":"https://github.com/awslabs/tough/releases/tag/tuftool-v0.15.0"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:14.956734909Z"}}