{"id":"CVE-2026-6967","revision":"01f4fd37b9114ed4b6b48aa997648346","records":[{"revision":"01f4fd37b9114ed4b6b48aa997648346","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-6967","aliases":[],"title":"Missing Delegated Metadata Validation in awslabs/tough","description":"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\n\n\nWe recommend you upgrade to tough-v0.22.0 / tuftool-v0.15.0.","state":0,"publishedAt":"2026-04-24T19:41:43.46+00:00","modifiedAt":"2026-10-20T18:26:25.513+00:00","affected":[{"ecosystem":"Vendor product","name":"tough","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"AWS\",\n                    \"product\": \"tough\",\n                    \"versions\": [\n                        {\n                            \"status\": \"affected\",\n                            \"version\": \"0.9.0\",\n                            \"lessThanOrEqual\": \"0.21\",\n                            \"versionType\": \"custom\"\n                        }\n                    ],\n                    \"defaultStatus\": \"unaffected\"\n                }"},{"ecosystem":"Vendor product","name":"tuftool","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"AWS\",\n                    \"product\": \"tuftool\",\n                    \"versions\": [\n                        {\n                            \"status\": \"affected\",\n                            \"version\": \"0\",\n                            \"lessThanOrEqual\": \"0.14\",\n                            \"versionType\": \"custom\"\n                        }\n                    ],\n                    \"defaultStatus\": \"unaffected\"\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:L","score":5.9,"severity":"MEDIUM"},{"system":"CVSS 4.0","vector":"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","score":7.1,"severity":"HIGH"}],"references":["https://aws.amazon.com/security/security-bulletins/2026-019-aws/","https://github.com/awslabs/tough/releases/tag/tough-v0.22.0","https://github.com/awslabs/tough/releases/tag/tuftool-v0.15.0","https://crates.io/crates/tough/0.22.0","https://crates.io/crates/tuftool/0.15.0","https://github.com/awslabs/tough/security/advisories/GHSA-4v58-8p28-2rq3"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-6967","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-6967","identifiers":["CVE-2026-6967"]},"retained":false,"historicalAffected":[]}],"coverage":[]}