{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-6967","assignerOrgId":"ff89ba41-3aa1-4d27-914a-91399e9639e5","state":"PUBLISHED","assignerShortName":"AMZN","dateReserved":"2026-04-24T16:15:46.781Z","datePublished":"2026-04-24T19:41:43.460Z","dateUpdated":"2026-04-24T20:13:20.016Z"},"containers":{"cna":{"providerMetadata":{"orgId":"ff89ba41-3aa1-4d27-914a-91399e9639e5","shortName":"AMZN","dateUpdated":"2026-04-24T19:59:27.098Z"},"title":"Missing Delegated Metadata Validation in awslabs/tough","problemTypes":[{"descriptions":[{"lang":"en","cweId":"CWE-345","description":"CWE-345: Insufficient Verification of Data Authenticity","type":"CWE"}]}],"impacts":[{"capecId":"CAPEC-141","descriptions":[{"lang":"en","value":"CAPEC-141: Cache Poisoning"}]}],"affected":[{"vendor":"AWS","product":"tough","versions":[{"status":"unaffected","version":"0.22.0"}],"defaultStatus":"unaffected"},{"vendor":"AWS","product":"tuftool","versions":[{"status":"unaffected","version":"0.15.0"}],"defaultStatus":"unaffected"}],"descriptions":[{"lang":"en","value":"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.","supportingMedia":[{"type":"text/html","base64":false,"value":"<p>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.</p><p>We recommend you upgrade to tough-v0.22.0 / tuftool-v0.15.0.</p>"}]}],"references":[{"url":"https://aws.amazon.com/security/security-bulletins/2026-019-aws/","tags":["vendor-advisory"]},{"url":"https://github.com/awslabs/tough/releases/tag/tough-v0.22.0","tags":["patch"]},{"url":"https://github.com/awslabs/tough/releases/tag/tuftool-v0.15.0","tags":["patch"]},{"url":"https://crates.io/crates/tough/0.22.0","tags":["patch"]},{"url":"https://crates.io/crates/tuftool/0.15.0","tags":["patch"]},{"url":"https://github.com/awslabs/tough/security/advisories/GHSA-4v58-8p28-2rq3","tags":["third-party-advisory"]}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV3_1":{"version":"3.1","attackVector":"NETWORK","attackComplexity":"HIGH","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"HIGH","availabilityImpact":"LOW","baseSeverity":"MEDIUM","baseScore":5.9,"vectorString":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:L"}},{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"HIGH","attackRequirements":"PRESENT","privilegesRequired":"LOW","userInteraction":"NONE","vulnConfidentialityImpact":"NONE","subConfidentialityImpact":"NONE","vulnIntegrityImpact":"HIGH","subIntegrityImpact":"HIGH","vulnAvailabilityImpact":"NONE","subAvailabilityImpact":"LOW","exploitMaturity":"NOT_DEFINED","Safety":"NOT_DEFINED","Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","valueDensity":"NOT_DEFINED","vulnerabilityResponseEffort":"NOT_DEFINED","providerUrgency":"NOT_DEFINED","version":"4.0","baseSeverity":"HIGH","baseScore":7.1,"vectorString":"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"}}],"source":{"discovery":"UNKNOWN"},"x_generator":{"engine":"Vulnogram 1.0.1"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-04-24T20:13:04.619106Z","id":"CVE-2026-6967","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-04-24T20:13:20.016Z"}}]}}