{"id":"CVE-2026-78433","published":"2026-10-14T15:17:25.637","lastModified":"2026-10-14T16:04:39.483","description":"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.","cvssScore":null,"cvssSeverity":null,"cvssVector":null,"cwes":["CWE-284","CWE-639","CWE-863","CWE-1220"],"vendors":[],"products":[],"references":[{"url":"https://blog.gitea.com/release-of-1.27.3/","tags":[]},{"url":"https://github.com/go-gitea/gitea/pull/39048","tags":[]},{"url":"https://github.com/go-gitea/gitea/pull/39077","tags":[]},{"url":"https://github.com/go-gitea/gitea/releases/tag/v1.27.3","tags":[]},{"url":"https://github.com/go-gitea/gitea/security/advisories/GHSA-frpv-2xgv-wxpq","tags":[]}],"exploitRefs":[{"url":"https://github.com/go-gitea/gitea/pull/39048","tags":[]},{"url":"https://github.com/go-gitea/gitea/pull/39077","tags":[]},{"url":"https://github.com/go-gitea/gitea/releases/tag/v1.27.3","tags":[]},{"url":"https://github.com/go-gitea/gitea/security/advisories/GHSA-frpv-2xgv-wxpq","tags":[]}],"hasPoc":true,"ai":null}