{"id":"CVE-2026-66853","state":"PUBLISHED","title":"Gitea restricted-user organization metadata disclosure","description":"Gitea's user organization-list API includes Limited-visibility organizations for authenticated restricted accounts without applying the visibility restriction enforced by the single-organization endpoint. A restricted user can list a known user's public organization memberships and retrieve limited organizations' names, descriptions, and avatars. This exposes organization metadata that should be hidden from the requesting account.","publishedAt":"2026-10-14T14:36:01.009Z","updatedAt":"2026-10-14T15:17:24.381Z","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"],"affected":[{"vendor":"Gitea","product":"Gitea","packageName":"code.gitea.io/gitea","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThanOrEqual":"1.27.2","versionType":"semver"}]}],"references":["https://github.com/go-gitea/gitea/security/advisories/GHSA-w4wc-g858-3672","https://blog.gitea.com/release-of-1.27.3/","https://github.com/go-gitea/gitea/pull/39047","https://github.com/go-gitea/gitea/pull/39058","https://github.com/go-gitea/gitea/releases/tag/v1.27.3"],"weaknesses":["CWE-200","CWE-863"],"ingestedAt":"2026-10-29T20:12:41.951Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/66xxx/CVE-2026-66853.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-66853","state":"PUBLISHED","datePublished":"2026-10-14T14:36:01.009Z","dateUpdated":"2026-10-14T15:17:24.381Z","assignerShortName":"Gitea","assignerOrgId":"88ee5874-cf24-4952-aea0-31affedb7ff2","dateReserved":"2026-08-13T16:50:59.743Z"},"containers":{"cna":{"title":"Gitea restricted-user organization metadata disclosure","descriptions":[{"lang":"en","value":"Gitea's user organization-list API includes Limited-visibility organizations for authenticated restricted accounts without applying the visibility restriction enforced by the single-organization endpoint. A restricted user can list a known user's public organization memberships and retrieve limited organizations' names, descriptions, and avatars. This exposes organization metadata that should be hidden from the requesting account."}],"affected":[{"vendor":"Gitea","product":"Gitea","packageName":"code.gitea.io/gitea","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThanOrEqual":"1.27.2","versionType":"semver"}]}],"references":[{"url":"https://github.com/go-gitea/gitea/security/advisories/GHSA-w4wc-g858-3672","name":"GitHub Security Advisory GHSA-w4wc-g858-3672","tags":["vendor-advisory"]},{"url":"https://blog.gitea.com/release-of-1.27.3/","name":"Gitea 1.27.3 release announcement","tags":["release-notes"]},{"url":"https://github.com/go-gitea/gitea/pull/39047","name":"Fix: go-gitea/gitea pull request #39047","tags":["patch"]},{"url":"https://github.com/go-gitea/gitea/pull/39058","name":"Fix: go-gitea/gitea pull request #39058","tags":["patch"]},{"url":"https://github.com/go-gitea/gitea/releases/tag/v1.27.3","name":"go-gitea/gitea v1.27.3 release","tags":["release-notes"]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-200","lang":"en","type":"CWE","description":"CWE-200: Exposure of Sensitive Information to an Unauthorized Actor"},{"cweId":"CWE-863","lang":"en","type":"CWE","description":"CWE-863: Incorrect Authorization"}]}],"providerMetadata":{"shortName":"Gitea","orgId":"88ee5874-cf24-4952-aea0-31affedb7ff2","dateUpdated":"2026-10-14T14:36:01.009Z"},"credits":[{"lang":"en","value":"https://github.com/Black1hp","type":"reporter"},{"lang":"en","value":"https://github.com/Mon3mRT","type":"finder"},{"lang":"en","value":"https://github.com/bircni","type":"remediation developer"}]},"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":"2026-10-14T15:17:20.621835Z","id":"CVE-2026-66853","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":"2026-10-14T15:17:24.381Z"}}]}}}