{"id":"EUVD-2026-25627","revision":"f45222995e3e41bcbb83d642df84da98","records":[{"revision":"f45222995e3e41bcbb83d642df84da98","observedAt":"2026-10-28T08:46:53.824+00:00","statement":{"source":"euvd","id":"EUVD-2026-25627","aliases":["CVE-2026-6966"],"title":"Improper verification of cryptographic signature uniqueness in delegated role validation in awslabs/tough before tough-v0.22.0 allows remote authenticated users to bypass the TUF signature threshold requirement by duplicating a valid signat…","description":"Improper verification of cryptographic signature uniqueness in delegated role validation in awslabs/tough before tough-v0.22.0 allows remote authenticated users to bypass the TUF signature threshold requirement by duplicating a valid signature, causing the client to accept forged delegated role metadata.\n\n\n\nWe recommend you upgrade to tough-v0.22.0 / tuftool-v0.15.0.","state":0,"publishedAt":null,"modifiedAt":null,"affected":[],"metrics":[{"system":"EUVD 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:N","score":7,"severity":null}],"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-8m7c-8m39-rv4x"],"sourceUrl":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-25627","license":"ENISA EUVD · source terms and attribution apply","enrichment":{"sourceStatus":null,"weaknesses":[],"productCriteria":[],"sourceDates":{"datePublished":"Apr 24, 2026, 7:38:24 PM","dateUpdated":"Oct 20, 2026, 6:24:24 PM"},"relatedAdvisories":[],"note":"EUVD source date text has no stated timezone and is retained without inventing a UTC instant. Related bulletin membership is not an alias, common cause or applicability claim. A missing vector with a zero score is treated as unrated. Complete vendor/product and underlying source evidence remains in the original JSON."},"key":"euvd:EUVD-2026-25627","identifiers":["EUVD-2026-25627","CVE-2026-6966"]},"retained":false,"historicalAffected":[]}],"coverage":[]}