{"schemaVersion":3,"id":"CVE-2026-6967","aliases":["CGA-hr5c-r5gj-qx75","GHSA-4v58-8p28-2rq3","CGA-q5j9-mh5p-5fwp"],"status":"published","duplicateOf":null,"title":null,"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\nWe recommend you upgrade to tough-v0.22.0 / tuftool-v0.15.0.","dates":{"published":"2026-04-24T19:41:43.460Z","modified":"2026-04-24T20:13:20.016Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":7.1,"severity":"high","version":"4.0","versionLabel":"v4.0","source":"CVE.org","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","computed":false,"selection":"backend-summary"},"metrics":[{"version":"4.0","versionLabel":"v4.0","source":"CVE.org","score":7.1,"severity":"high","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","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"CVE.org","score":5.9,"severity":"medium","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:L","exploitability":null,"impact":null,"computed":false},{"version":"4.0","versionLabel":"v4.0","source":"OSV · Chainguard","score":7.1,"severity":"high","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","exploitability":null,"impact":null,"computed":true},{"version":"4.0","versionLabel":"v4.0","source":"OSV · Crates.io","score":7.1,"severity":"high","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","exploitability":null,"impact":null,"computed":true},{"version":"3.1","versionLabel":"v3.1","source":"OSV · Crates.io","score":5.9,"severity":"medium","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:L","exploitability":4.1,"impact":7,"computed":true},{"version":"4.0","versionLabel":"v4.0","source":"NVD","score":7.1,"severity":"high","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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"NVD","score":6.5,"severity":"medium","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.00303,"percentile":0.21603,"severity":"low","asOf":"2026-10-19T00:00:00.000Z","change":{"pp":0.05700000000000002,"baselineDate":"2026-09-19T00:00:00.000Z","baselineScore":0.00246},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.00246,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.00246,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.00246,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.00246,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.00246,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.00246,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.00246,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00246,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00246,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00246,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00303,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00303,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00303,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00303,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00303,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00303,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00303,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00303,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00303,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00303,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00303,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00303,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00303,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00303,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00303,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00303,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00303,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00303,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00303,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00303,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00303,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00303,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00303,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00303,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00303,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00303,"percentile":0.21603}],"last30":[{"date":"2026-09-19T00:00:00.000Z","score":0.00246,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.00246,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00246,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00246,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00246,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00303,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00303,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00303,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00303,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00303,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00303,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00303,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00303,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00303,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00303,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00303,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00303,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00303,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00303,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00303,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00303,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00303,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00303,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00303,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00303,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00303,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00303,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00303,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00303,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00303,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00303,"percentile":0.21603}]},"kev":{"state":"not-listed","entries":[],"listedCount":0,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":false,"entry":null},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[],"exploitCount":0,"weaknesses":[{"id":"CWE-345","name":"Insufficient Verification of Data Authenticity","description":"The product does not sufficiently verify the origin or authenticity of data, in a way that causes it to accept invalid data.","type":"weakness","status":"Draft","abstraction":"Class","likelihoodOfExploit":null,"url":"https://cwe.mitre.org/data/definitions/345.html"}],"affected":[{"vendor":"amazon","product":"tough","name":"tough","label":"tough","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≥ 0.9.0, < 0.22.0","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 0.9.0, < 0.22.0","eol":null,"hubHref":"/vendor/amazon/tough"},{"vendor":"amazon","product":"tuftool","name":"tuftool","label":"tuftool","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"< 0.15.0","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 0.15.0","eol":null,"hubHref":"/vendor/amazon/tuftool"},{"vendor":"chainguard","product":"mise","name":"mise","label":"mise","ecosystem":"Chainguard","cpePart":null,"purl":"pkg:apk/chainguard/mise","purlType":"apk","versions":[{"text":"< 2026.5.8-r0","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 2026.5.8-r0","eol":null,"hubHref":null},{"vendor":"Crates.Io","product":"tough","name":"tough","label":"tough","ecosystem":"Crates.Io","cpePart":null,"purl":"pkg:cargo/tough","purlType":"cargo","versions":[{"text":"≥ 0.9.0, < 0.22.0","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 0.9.0, < 0.22.0","eol":null,"hubHref":null},{"vendor":"Crates.Io","product":"tuftool","name":"tuftool","label":"tuftool","ecosystem":"Crates.Io","cpePart":null,"purl":"pkg:cargo/tuftool","purlType":"cargo","versions":[{"text":"< 0.15.0","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 0.15.0","eol":null,"hubHref":null}],"affectedCount":5,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://aws.amazon.com/security/security-bulletins/2026-019-aws/","label":"aws.amazon.com/security/security-bulletins/2026-019-aws/","hostname":"aws.amazon.com","tags":["Vendor Advisory","Advisory"]},{"url":"https://github.com/awslabs/tough/releases/tag/tough-v0.22.0","label":"github.com/awslabs/tough/releases/tag/tough-v0.22.0","hostname":"github.com","tags":["Patch","FIX","WEB","Release Notes"]},{"url":"https://github.com/awslabs/tough/releases/tag/tuftool-v0.15.0","label":"github.com/awslabs/tough/releases/tag/tuftool-v0.15.0","hostname":"github.com","tags":["Patch","FIX","WEB","Release Notes"]},{"url":"https://crates.io/crates/tough/0.22.0","label":"crates.io/crates/tough/0.22.0","hostname":"crates.io","tags":["Patch","FIX","WEB","Product"]},{"url":"https://crates.io/crates/tuftool/0.15.0","label":"crates.io/crates/tuftool/0.15.0","hostname":"crates.io","tags":["Patch","FIX","WEB","Product"]},{"url":"https://github.com/awslabs/tough/security/advisories/GHSA-4v58-8p28-2rq3","label":"github.com/awslabs/tough/security/advisories/GHSA-4v58-8p28-2rq3","hostname":"github.com","tags":["Third Party Advisory","Advisory","WEB","Vendor Advisory"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/6xxx/CVE-2026-6967.json","label":"github.com/CVEProject/cvelistV5/tree/main/cves/2026/6xxx/CVE-2026-6967.json","hostname":"github.com","tags":["Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-6967","label":"nvd.nist.gov/vuln/detail/CVE-2026-6967","hostname":"nvd.nist.gov","tags":["Advisory"]},{"url":"https://aws.amazon.com/security/security-bulletins/2026-019-aws","label":"aws.amazon.com/security/security-bulletins/2026-019-aws","hostname":"aws.amazon.com","tags":["WEB"]},{"url":"https://github.com/awslabs/tough","label":"github.com/awslabs/tough","hostname":"github.com","tags":["PACKAGE"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":["CGA-774J-R4WH-GWM2"]},"timeline":[{"kind":"published","date":"2026-04-24T19:41:43.460Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-04-24T20:13:20.016Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":28,"level":"medium","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-19T21:28:57.925Z","stale":false,"partial":false}}