{"id":"CVE-2026-20888","state":"PUBLISHED","title":"Gitea Pull Requests Auto-Merge: Read-Only Users Can Cancel Scheduled Auto-Merge via Web Endpoint (Authorization Bypass)","description":"Gitea does not properly verify authorization when canceling scheduled auto-merges via the web interface. A user with read access to pull requests may be able to cancel auto-merges scheduled by other users.","publishedAt":"2026-01-22T22:01:51.214Z","updatedAt":"2026-01-23T21:54:14.856Z","severity":{"score":4.3,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","source":"CISA-ADP"},"assigner":"Gitea","products":["Gitea Gitea Open Source Git Server"],"affected":[{"vendor":"Gitea","product":"Gitea Open Source Git Server","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThanOrEqual":"1.25.3","versionType":"semver"}]}],"references":["https://github.com/go-gitea/gitea/security/advisories/GHSA-ccq9-c5hv-cf64","https://github.com/go-gitea/gitea/pull/36341","https://github.com/go-gitea/gitea/pull/36356","https://github.com/go-gitea/gitea/releases/tag/v1.25.4","https://blog.gitea.com/release-of-1.25.4/"],"weaknesses":["CWE-284","CWE-862"],"ingestedAt":"2026-10-29T20:11:10.572Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/20xxx/CVE-2026-20888.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-20888","state":"PUBLISHED","datePublished":"2026-01-22T22:01:51.214Z","dateUpdated":"2026-01-23T21:54:14.856Z","assignerShortName":"Gitea","assignerOrgId":"88ee5874-cf24-4952-aea0-31affedb7ff2","dateReserved":"2026-01-08T23:02:37.542Z"},"containers":{"cna":{"title":"Gitea Pull Requests Auto-Merge: Read-Only Users Can Cancel Scheduled Auto-Merge via Web Endpoint (Authorization Bypass)","descriptions":[{"lang":"en","value":"Gitea does not properly verify authorization when canceling scheduled auto-merges via the web interface. A user with read access to pull requests may be able to cancel auto-merges scheduled by other users."}],"affected":[{"vendor":"Gitea","product":"Gitea Open Source Git Server","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThanOrEqual":"1.25.3","versionType":"semver"}]}],"references":[{"url":"https://github.com/go-gitea/gitea/security/advisories/GHSA-ccq9-c5hv-cf64","name":"GitHub Security Advisory","tags":["vendor-advisory"]},{"url":"https://github.com/go-gitea/gitea/pull/36341","name":"GitHub Pull Request #36341","tags":["patch"]},{"url":"https://github.com/go-gitea/gitea/pull/36356","name":"GitHub Pull Request #36356","tags":["patch"]},{"url":"https://github.com/go-gitea/gitea/releases/tag/v1.25.4","name":"Gitea v1.25.4 Release","tags":["release-notes"]},{"url":"https://blog.gitea.com/release-of-1.25.4/","name":"Gitea v1.25.4 Release Blog Post","tags":["release-notes"]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-284","description":"CWE-284: Improper Access Control","lang":"en","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-862","description":"CWE-862: Missing Authorization","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"Gitea","orgId":"88ee5874-cf24-4952-aea0-31affedb7ff2","dateUpdated":"2026-01-22T22:01:51.214Z"},"credits":[{"lang":"en","value":"spingARbor","type":"reporter"}]},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":4.3,"attackVector":"NETWORK","baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","integrityImpact":"NONE","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"NONE","privilegesRequired":"LOW","confidentialityImpact":"LOW"}},{"other":{"type":"ssvc","content":{"timestamp":"2026-01-23T21:09:52.298236Z","id":"CVE-2026-20888","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-01-23T21:54:14.856Z"}}]}}}