CVE-2026-78433
CVE-2026-78433 · Gitea private attachment disclosure through repository mismatch
This page contains facts from public vulnerability sources. Check the original advisory before updating.
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.
CVSS 5.9 · Medium · EPSS 0.4%
- Published
- Updated
Affected products and versions
gitea
- Versions
- ≥ 1.26.0, ≤ 1.27.2: Affected (semver)
No fix published
Original sources
- https://github.com/go-gitea/gitea/security/advisories/GHSA-frpv-2xgv-wxpq
- https://blog.gitea.com/release-of-1.27.3/
- https://github.com/go-gitea/gitea/pull/39048
- https://github.com/go-gitea/gitea/pull/39077
- https://github.com/go-gitea/gitea/releases/tag/v1.27.3
- https://nvd.nist.gov/vuln/detail/CVE-2026-78433