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GHSA-qf2f-qh6p-7v89: 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`

mediumCVSS 4.3CVE-2026-59766
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 by UserID only and LoadAttributes brings in the issue (title, state), leaking private issue titles after revocation. Steps to reproduce Using the provided reproduction materials, as a revoked user: 1. Control: GET /api/v1/repos/admin/starred-test → 404. 2. GET /api/v1/user/starred → leaks admin/starred-test, private:true, clone_url. 3. GET /api/v1/user/times → leaks issue.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 1. getStarredRepos: drop (or minimally redact) repos where permission.HasAnyUnitAccessOrPublicAccess() is false for the caller. 2. ListMyTrackedTimes: filter tracked-time entries by current repo access. 3. 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).

Details

Source
GitHub Security Advisories (INTL · database · site)
Severity
medium — CVSS 4.3
Published
2026-07-21
Last updated
2026-07-21
Exploitation
Not in CISA KEV at last sync

Original advisory: https://github.com/advisories/GHSA-qf2f-qh6p-7v89

Referenced CVEs

CVECSIRTS overviewExternal
CVE-2026-59766coverage & exploitation statusNVD · CVE.org

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