{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-78433", "assignerOrgId": "88ee5874-cf24-4952-aea0-31affedb7ff2", "state": "PUBLISHED", "assignerShortName": "Gitea", "dateReserved": "2026-08-24T20:45:09.297Z", "datePublished": "2026-10-14T14:38:17.247Z", "dateUpdated": "2026-10-14T14:38:17.247Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "88ee5874-cf24-4952-aea0-31affedb7ff2", "shortName": "Gitea", "dateUpdated": "2026-10-14T14:38:17.247Z"}, "title": "Gitea private attachment disclosure through repository mismatch", "descriptions": [{"lang": "en", "value": "Gitea's web attachment handler skips its cross-repository ownership check for attachments created before 16 January 2026 and checks permissions against the repository named in the request URL instead. An unauthenticated attacker who knows a private attachment's UUID can request it through a public repository's attachment path and retrieve its contents. This can expose issue and pull request attachments or release assets; the random attachment UUID must already be known to the attacker."}], "affected": [{"vendor": "Gitea", "product": "Gitea", "packageName": "gitea.dev", "defaultStatus": "unaffected", "versions": [{"version": "1.26.0", "status": "affected", "lessThanOrEqual": "1.27.2", "versionType": "semver"}]}], "references": [{"url": "https://github.com/go-gitea/gitea/security/advisories/GHSA-frpv-2xgv-wxpq", "name": "GitHub Security Advisory GHSA-frpv-2xgv-wxpq", "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/39048", "name": "Fix: go-gitea/gitea pull request #39048", "tags": ["patch"]}, {"url": "https://github.com/go-gitea/gitea/pull/39077", "name": "Fix: go-gitea/gitea pull request #39077", "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": [{"lang": "en", "type": "CWE", "cweId": "CWE-284", "description": "CWE-284: Improper Access Control"}, {"lang": "en", "type": "CWE", "cweId": "CWE-639", "description": "CWE-639: Authorization Bypass Through User-Controlled Key"}, {"lang": "en", "type": "CWE", "cweId": "CWE-863", "description": "CWE-863: Incorrect Authorization"}, {"lang": "en", "type": "CWE", "cweId": "CWE-1220", "description": "CWE-1220: Insufficient Granularity of Access Control"}]}], "credits": [{"lang": "en", "value": "https://github.com/iabdullah215", "type": "reporter"}, {"lang": "en", "value": "https://github.com/bircni", "type": "remediation developer"}, {"lang": "en", "value": "https://github.com/silverwind", "type": "remediation developer"}]}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "packageName": "gitea.dev", "product": "Gitea", "vendor": "Gitea", "versions": [{"lessThanOrEqual": "1.27.2", "status": "affected", "version": "1.26.0", "versionType": "semver"}]}], "source": "88ee5874-cf24-4952-aea0-31affedb7ff2"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Gitea's web attachment handler skips its cross-repository ownership check for attachments created before 16 January 2026 and checks permissions against the repository named in the request URL instead. An unauthenticated attacker who knows a private attachment's UUID can request it through a public repository's attachment path and retrieve its contents. This can expose issue and pull request attachments or release assets; the random attachment UUID must already be known to the attacker."}], "id": "CVE-2026-78433", "lastModified": "2026-10-14T16:04:39.483", "metrics": {}, "published": "2026-10-14T15:17:25.637", "references": [{"source": "88ee5874-cf24-4952-aea0-31affedb7ff2", "url": "https://blog.gitea.com/release-of-1.27.3/"}, {"source": "88ee5874-cf24-4952-aea0-31affedb7ff2", "url": "https://github.com/go-gitea/gitea/pull/39048"}, {"source": "88ee5874-cf24-4952-aea0-31affedb7ff2", "url": "https://github.com/go-gitea/gitea/pull/39077"}, {"source": "88ee5874-cf24-4952-aea0-31affedb7ff2", "url": "https://github.com/go-gitea/gitea/releases/tag/v1.27.3"}, {"source": "88ee5874-cf24-4952-aea0-31affedb7ff2", "url": "https://github.com/go-gitea/gitea/security/advisories/GHSA-frpv-2xgv-wxpq"}], "sourceIdentifier": "88ee5874-cf24-4952-aea0-31affedb7ff2", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-284"}, {"lang": "en", "value": "CWE-639"}, {"lang": "en", "value": "CWE-863"}, {"lang": "en", "value": "CWE-1220"}], "source": "88ee5874-cf24-4952-aea0-31affedb7ff2", "type": "Secondary"}]}

{}

{}