CVE-2026-39957
Medium
Description
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.
SeverityMedium
CVSS4.3
Exploit probability—
Product
Lychee
PublishedApr 9, 2026
First seenApr 9, 2026
Weakness typeCWE-863Incorrect authorization
How to fix
Update
- lycheeorg lychee7.5.4 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| lycheeorg lychee | v < 7.5.4 | 7.5.4 |
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