Vulnerability advisory
CVE-2026-52812
Gogs: LFS dedupe path leaks private repo content across tenants
Also known as GHSA-6p9m-q3jp-47h4GO-2026-5184
Severity
- CVSS 4.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:L/SI:N/SA:N
Affected versions
Repository
| Affected commits | Fixed by commit |
|---|---|
| GIT github.com/gogs/gogs ↗ | |
| All commits before 3ba8aca90e17e5410b7e8b227c9f29256ac3e875 | 3ba8aca90e17e5410b7e8b227c9f29256ac3e875 |
| Not specified | f35a767af74e05342bafc6fdda02c791816426f8 |
Also listed as affected (60)
| |
Description
Gogs is an open source self-hosted Git service. Prior to 0.14.3, Git LFS storage is content-addressed by OID alone (<LFS-root>/<oid[0]>/<oid[1]>/<oid>) but per-repo authorization lives in the lfs_object table keyed (repo_id, oid). serveUpload skips re-uploading when the OID file already exists on disk and inserts a new (repo_id, oid) row pointing at it without verifying the request body hashes to the OID being claimed. Any user with write access to one repo can bind their repo to an OID owned by a private repo and download the original bytes via their own download endpoint. This vulnerability is fixed in 0.14.3.
References
- Webgithub.com/gogs/gogs/releases/tag/v0.14.3 ↗
- Advisorygithub.com/CVEProject/cvelistV5/tree/main/cves/2026/52xxx/CVE-2026-52812.json ↗
- Advisorygithub.com/gogs/gogs/security/advisories/GHSA-6p9m-q3jp-47h4 ↗
- Advisorynvd.nist.gov/vuln/detail/CVE-2026-52812 ↗
- Fixgithub.com/gogs/gogs/commit/f35a767af74e05342bafc6fdda02c791816426f8 ↗
- Fixgithub.com/gogs/gogs/pull/8333 ↗