go-gitea/gitea · Security
Gitea CVE-2026-20800 sibling endpoints not covered: revoked user still reads private repo objects via `/api/v1/user/starred` and private issue titles via `/api/v1/user/times`
- GHSA ID
- GHSA-qf2f-qh6p-7v89
- CVE ID
- CVE-2026-59766
- Severity
- medium
- Published
- Updated
- CVSS
- 4.3 · CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
- CVSS v3
- 4.3 · CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Description
Summary
CVE-2026-20800 fixed private-info leakage to revoked users only for the notification endpoint. Two sibling endpoints that return data keyed on the caller's own relationship still do not re-check repo access at output time:
GET /api/v1/user/starred—getStarredRepos()computes a per-repo permission but still lists every starred repo (no filtering), so the full repo object (full_name,private,clone_url,ssh_url) of a now-inaccessible private repo is returned.GET /api/v1/user/times—ListMyTrackedTimes()queries byUserIDonly andLoadAttributesbrings in the issue (title,state), leaking private issue titles after revocation.
Steps to reproduce
Using the provided reproduction materials, as a revoked user:
- Control:
GET /api/v1/repos/admin/starred-test→ 404. GET /api/v1/user/starred→ leaksadmin/starred-test,private:true,clone_url.GET /api/v1/user/times→ leaksissue.title = "SECRET: …",state.
(Runtime-confirmed on gitea/gitea:1.25.4. Oracle = planted sentinel title; no real secret exfiltrated.)
Impact
A former collaborator can enumerate private repos they starred and read private issue titles they logged time on, indefinitely after access revocation. Metadata only (no repo content / comment bodies). Low.
Suggested remediation
getStarredRepos: drop (or minimally redact) repos wherepermission.HasAnyUnitAccessOrPublicAccess()is false for the caller.ListMyTrackedTimes: filter tracked-time entries by current repo access.- Optionally clear a user's stars / time entries for a private repo on revocation.
Credit
Reported as part of an incomplete-patch measurement study (responsible disclosure).
CWEs
- CWE-863 · Incorrect Authorization