Auth bypass in Librephotos
CVE-2026-57943
LibrePhotos before 1.0.0 contains a broken object level authorization vulnerability in the SetPhotosShared endpoint that allows authenticated users to grant themselves access to other users' private photos by bypassing ownership validation. Attackers can manipulate shared_to relations without proper owner checks to read arbitrary private photos belonging to other users.
Vulnerability class: IDOR (Insecure Direct Object Reference)
EPSS: 0.002 (11.4th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:L/A:N.
Affected products
- Librephotos — versions 0
Weakness classification (CWE)
References
- disclosure@vulncheck.com (patch)
- disclosure@vulncheck.com (issue-tracking, technical-description)
- disclosure@vulncheck.com (issue-tracking)
- disclosure@vulncheck.com (release-notes)
- disclosure@vulncheck.com (third-party-advisory)
Frequently asked questions
- What is CVE-2026-57943?
- CVE-2026-57943 is a medium-severity vulnerability in Librephotos, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 5.9/10. Published 2026-06-29.
- How severe is CVE-2026-57943?
- Medium severity. CVSS v3 base score is 5.9 out of 10.