{"id":"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.","aliases":["GHSA-4v58-8p28-2rq3"],"modified":"2026-07-15T01:49:15.883765081Z","published":"2026-04-24T19:41:43.460Z","related":["CGA-774j-r4wh-gwm2"],"database_specific":{"cna_assigner":"AMZN","cwe_ids":["CWE-345"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/6xxx/CVE-2026-6967.json"},"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"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/awslabs/tough","events":[{"introduced":"9590df5d7d71dce7a3ff967627dbf8b6a9221d8d"},{"fixed":"606dc87a8456c8f6e24c4a85e12b280cf2c9ca00"},{"introduced":"0"},{"fixed":"606dc87a8456c8f6e24c4a85e12b280cf2c9ca00"}],"database_specific":{"extracted_events":[{"introduced":"0.9.0"},{"fixed":"0.22.0"},{"introduced":"0"},{"fixed":"0.15.0"}],"source":["CPE_RANGE","REFERENCES"],"cpe":["cpe:2.3:a:amazon:tough:*:*:*:*:*:rust:*:*","cpe:2.3:a:amazon:tuftool:*:*:*:*:*:rust:*:*"]}}],"versions":["tuftool-v0.14.0","tough-v0.21.0","tough-ssm-v0.16.0","tough-kms-v0.13.0","tuftool-v0.13.0","tough-v0.20.0","tough-ssm-v0.15.0","tough-kms-v0.12.0","tuftool-v0.12.0","tough-v0.19.0","tough-ssm-v0.14.0","tough-kms-v0.11.0","olpc-cjson-v0.1.4","tuftool-v0.11.1","tuftool-v0.11.0","tough-v0.18.0","tough-ssm-v0.13.0","tough-kms-v0.10.0","tough-v0.17.1","tuftool-v0.10.3","tough-v0.17.0","tough-ssm-v0.12.0","tough-kms-v0.9.0","tuftool-v0.10.2","tough-v0.16.0","tough-ssm-v0.11.0","tough-kms-v0.8.0","tuftool-v0.10.1","tough-v0.15.0","tough-ssm-v0.10.0","tough-kms-v0.7.0","tuftool-v0.10.0","tough-v0.14.0","tough-ssm-v0.9.0","tough-kms-v0.6.0","tuftool-v0.9.0","tough-v0.13.0","tough-ssm-v0.8.0","tough-kms-v0.5.0","olpc-cjson-v0.1.3"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-6967.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:H/SA:L"}]}