{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-23603", "assignerOrgId": "88ee5874-cf24-4952-aea0-31affedb7ff2", "state": "PUBLISHED", "assignerShortName": "Gitea", "dateReserved": "2026-03-03T03:25:50.307Z", "datePublished": "2026-08-13T16:44:38.451Z", "dateUpdated": "2026-08-13T16:44:38.451Z"}, "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", "versions": [{"version": "0", "lessThanOrEqual": "1.26.4", "status": "affected", "versionType": "semver"}], "defaultStatus": "unaffected"}], "problemTypes": [{"descriptions": [{"cweId": "CWE-918", "description": "CWE-918", "lang": "en", "type": "CWE"}]}], "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"]}], "providerMetadata": {"orgId": "88ee5874-cf24-4952-aea0-31affedb7ff2", "shortName": "Gitea", "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"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Gitea Open Source Git Server", "vendor": "Gitea", "versions": [{"lessThanOrEqual": "1.26.4", "status": "affected", "version": "0", "versionType": "semver"}]}], "source": "88ee5874-cf24-4952-aea0-31affedb7ff2"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Blind SSRF in OAuth2 avatar synchronization via unvalidated OIDC picture claim"}], "id": "CVE-2026-23603", "lastModified": "2026-08-13T17:17:21.770", "metrics": {}, "published": "2026-08-13T17:17:21.770", "references": [{"source": "88ee5874-cf24-4952-aea0-31affedb7ff2", "url": "https://blog.gitea.com/gitea-1.27.0-is-released/"}, {"source": "88ee5874-cf24-4952-aea0-31affedb7ff2", "url": "https://github.com/go-gitea/gitea/releases/tag/v1.27.0"}, {"source": "88ee5874-cf24-4952-aea0-31affedb7ff2", "url": "https://github.com/go-gitea/gitea/security/advisories/GHSA-x77v-q46j-393g"}], "sourceIdentifier": "88ee5874-cf24-4952-aea0-31affedb7ff2", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-918"}], "source": "88ee5874-cf24-4952-aea0-31affedb7ff2", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,1.26.4]"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "Gitea Open Source Git Server", "source": "cna", "vendor": "Gitea"}, "product": "gitea_open_source_git_server", "vendor": "gitea"}], "created": "2026-08-13T19:00:12.869633+00:00", "updated": "2026-08-13T19:15:03.237279+00:00", "vendors": ["gitea", "gitea$PRODUCT$gitea_open_source_git_server"]}