CVE-2026-39957 (GCVE-0-2026-39957)
Vulnerability from cvelistv5 – Published: 2026-04-09 16:14 – Updated: 2026-04-09 19:08
VLAI
EPSS
VEX
Title
Lychee has Broken Access Control in SharingController::listAll() leaks private album sharing metadata to unauthorized users
Summary
Lychee is a free, open-source photo-management tool. Prior to 7.5.4, a SQL operator-precedence bug in SharingController::listAll() causes the orWhereNotNull('user_group_id') clause to escape the ownership filter applied by the when() block. Any authenticated non-admin user with upload permission who owns at least one album can retrieve all user-group-based sharing permissions across the entire instance, including private albums owned by other users. This vulnerability is fixed in 7.5.4.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-04-09 19:07 UTC
CWE
- CWE-863 - Incorrect Authorization
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/LycheeOrg/Lychee/security/advi… | x_refsource_CONFIRM |
| https://github.com/LycheeOrg/Lychee/pull/4264 | x_refsource_MISC |
| https://github.com/LycheeOrg/Lychee/commit/76a3f0… | x_refsource_MISC |
Impacted products
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"lastModified": "2026-10-26T21:10:00.170",
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