{"schemaVersion":3,"id":"CVE-2026-66874","aliases":[],"status":"published","duplicateOf":null,"title":"Gitea required Actions check bypass through skipped workflows","description":"For pull request events, Gitea reads workflow definitions from the pull request head and posts a synthetic skipped status when workflow branch or path filters exclude execution. A fork pull request author can supply a workflow matching a required status context but deliberately prevent it from running. Because skipped statuses count as success, branch protection or organization-required workflow checks can appear satisfied without the mandated workflow executing; no runner or maintainer approval is required for this path.","dates":{"published":"2026-10-14T14:36:06.090Z","modified":"2026-10-14T15:12:51.792Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":6.5,"severity":"medium","version":"3.1","versionLabel":"v3.1","source":"CVE.org","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.1","versionLabel":"v3.1","source":"CVE.org","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},{"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":0.00262,"percentile":0.17011,"severity":"low","asOf":"2026-10-22T00:00:00.000Z","change":{"pp":null,"baselineDate":null,"baselineScore":null},"history":[{"date":"2026-10-15T00:00:00.000Z","score":0.00262,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00262,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00262,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00262,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00262,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.00262,"percentile":null},{"date":"2026-10-21T00:00:00.000Z","score":0.00262,"percentile":null},{"date":"2026-10-22T00:00:00.000Z","score":0.00262,"percentile":0.17011}],"last30":[{"date":"2026-10-15T00:00:00.000Z","score":0.00262,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00262,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00262,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00262,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00262,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.00262,"percentile":null},{"date":"2026-10-21T00:00:00.000Z","score":0.00262,"percentile":null},{"date":"2026-10-22T00:00:00.000Z","score":0.00262,"percentile":0.17011}]},"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-284","name":"Improper Access Control","description":"The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.","type":"weakness","status":"Incomplete","abstraction":"Pillar","likelihoodOfExploit":null,"url":"https://cwe.mitre.org/data/definitions/284.html"},{"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"},{"id":"CWE-693","name":"Protection Mechanism Failure","description":"The product does not use or incorrectly uses a protection mechanism that provides sufficient defense against directed attacks against the product.","type":"weakness","status":"Draft","abstraction":"Pillar","likelihoodOfExploit":null,"url":"https://cwe.mitre.org/data/definitions/693.html"},{"id":"CWE-807","name":"Reliance on Untrusted Inputs in a Security Decision","description":"The product uses a protection mechanism that relies on the existence or values of an input, but the input can be modified by an untrusted actor in a way that bypasses the protection mechanism.","type":"weakness","status":"Incomplete","abstraction":"Base","likelihoodOfExploit":"High","url":"https://cwe.mitre.org/data/definitions/807.html"}],"affected":[{"vendor":"gitea","product":"gitea","name":"Gitea","label":"gitea","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≤ 1.27.2","noFixRecorded":false,"fixedIn":null}],"versionsText":"≤ 1.27.2","eol":null,"hubHref":"/vendor/gitea/gitea"}],"affectedCount":1,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://github.com/go-gitea/gitea/security/advisories/GHSA-5xp7-r6cr-39ff","label":"github.com/go-gitea/gitea/security/advisories/GHSA-5xp7-r6cr-39ff","hostname":"github.com","tags":["Vendor Advisory"]},{"url":"https://blog.gitea.com/release-of-1.27.3/","label":"blog.gitea.com/release-of-1.27.3/","hostname":"blog.gitea.com","tags":["Release Notes"]},{"url":"https://github.com/go-gitea/gitea/pull/39005","label":"github.com/go-gitea/gitea/pull/39005","hostname":"github.com","tags":["Patch"]},{"url":"https://github.com/go-gitea/gitea/pull/39018","label":"github.com/go-gitea/gitea/pull/39018","hostname":"github.com","tags":["Patch"]},{"url":"https://github.com/go-gitea/gitea/releases/tag/v1.27.3","label":"github.com/go-gitea/gitea/releases/tag/v1.27.3","hostname":"github.com","tags":["Release Notes"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2026-10-14T14:36:06.090Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-10-14T15:12:51.792Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":26,"level":"medium","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-22T17:59:30.063Z","stale":false,"partial":false}}