Auth bypass in Gitea
CVE-2026-66853
Gitea's user organization-list API includes Limited-visibility organizations for authenticated restricted accounts without applying the visibility restriction enforced by the single-organization endpoint. A restricted user can list a known user's public organization memberships and retrieve limited organizations' names, descriptions, and avatars. This exposes organization metadata that should be hidden from the requesting account.
Vulnerability class: Information Disclosure
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- 88ee5874-cf24-4952-aea0-31affedb7ff2 (vendor-advisory)
- 88ee5874-cf24-4952-aea0-31affedb7ff2 (release-notes)
- 88ee5874-cf24-4952-aea0-31affedb7ff2 (patch)
- 88ee5874-cf24-4952-aea0-31affedb7ff2 (patch)
- 88ee5874-cf24-4952-aea0-31affedb7ff2 (release-notes)
Frequently asked questions
- What is CVE-2026-66853?
- CVE-2026-66853 is a medium-severity vulnerability in Gitea, classified under Information Disclosure. CVSS score: 4.3/10. Published 2026-10-14.
- How severe is CVE-2026-66853?
- Medium severity. CVSS v3 base score is 4.3 out of 10.