{"id":"CVE-2026-23603","state":"PUBLISHED","title":"Blind SSRF in OAuth2 avatar synchronization via unvalidated OIDC picture claim","description":"Blind SSRF in OAuth2 avatar synchronization via unvalidated OIDC picture claim","publishedAt":"2026-08-13T16:44:38.451Z","updatedAt":"2026-08-14T17:45:37.628Z","severity":{"score":3.1,"label":"Low","version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/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":"1.26.4","versionType":"semver"}]}],"references":["https://github.com/go-gitea/gitea/security/advisories/GHSA-x77v-q46j-393g","https://github.com/go-gitea/gitea/releases/tag/v1.27.0","https://blog.gitea.com/gitea-1.27.0-is-released/"],"weaknesses":["CWE-918"],"ingestedAt":"2026-10-29T20:11:21.040Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/23xxx/CVE-2026-23603.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-23603","state":"PUBLISHED","datePublished":"2026-08-13T16:44:38.451Z","dateUpdated":"2026-08-14T17:45:37.628Z","assignerShortName":"Gitea","assignerOrgId":"88ee5874-cf24-4952-aea0-31affedb7ff2","dateReserved":"2026-03-03T03:25:50.307Z"},"containers":{"cna":{"title":"Blind SSRF in OAuth2 avatar synchronization via unvalidated OIDC picture claim","descriptions":[{"lang":"en","value":"Blind SSRF in OAuth2 avatar synchronization via unvalidated OIDC picture claim"}],"affected":[{"vendor":"Gitea","product":"Gitea Open Source Git Server","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThanOrEqual":"1.26.4","versionType":"semver"}]}],"references":[{"url":"https://github.com/go-gitea/gitea/security/advisories/GHSA-x77v-q46j-393g","name":"GitHub Security Advisory","tags":["vendor-advisory"]},{"url":"https://github.com/go-gitea/gitea/releases/tag/v1.27.0","name":"Gitea v1.27.0 Release","tags":["release-notes"]},{"url":"https://blog.gitea.com/gitea-1.27.0-is-released/","name":"Gitea v1.27.0 Release Blog Post","tags":["release-notes"]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-918","description":"CWE-918","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"Gitea","orgId":"88ee5874-cf24-4952-aea0-31affedb7ff2","dateUpdated":"2026-08-13T16:44:38.451Z"},"credits":[{"lang":"en","value":"alimezar","type":"reporter"},{"lang":"en","value":"cwanglab","type":"reporter"},{"lang":"en","value":"Vext-Labs","type":"reporter"},{"lang":"en","value":"Medoedus","type":"reporter"},{"lang":"en","value":"ffulbtech","type":"reporter"},{"lang":"en","value":"theluckystrike","type":"reporter"},{"lang":"en","value":"prakhar0x01","type":"reporter"},{"lang":"en","value":"AnuragBathani","type":"reporter"},{"lang":"en","value":"khoadb175","type":"reporter"}],"x_generator":{"engine":"cvelib 1.8.0"}},"adp":[{"title":"CISA ADP Vulnrichment","references":[{"url":"https://github.com/go-gitea/gitea/security/advisories/GHSA-x77v-q46j-393g","tags":["exploit"]}],"metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":3.1,"attackVector":"NETWORK","baseSeverity":"LOW","vectorString":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N","integrityImpact":"NONE","userInteraction":"NONE","attackComplexity":"HIGH","availabilityImpact":"NONE","privilegesRequired":"LOW","confidentialityImpact":"LOW"}},{"other":{"type":"ssvc","content":{"timestamp":"2026-08-14T17:45:27.930885Z","id":"CVE-2026-23603","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-08-14T17:45:37.628Z"}}]}}}