PT-2026-31650 · Lychee · Lychee

CVE-2026-39957

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Published

2026-04-09

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Updated

2026-04-09

CVSS v3.1

4.3

Medium

VectorAV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Name of the Vulnerable Software and Affected Versions Lychee versions prior to 7.5.4
Description A SQL operator-precedence bug in SharingController::listAll() allows authenticated non-admin users with upload permission who own at least one album to retrieve all user-group-based sharing permissions across the entire instance, including private albums owned by other users. The orWhereNotNull('user group id') clause bypasses the ownership filter applied by the when() block.
Recommendations Update to version 7.5.4 or later.

Exploit

Fix

DoS

Incorrect Authorization

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Weakness Enumeration

Related Identifiers

CVE-2026-39957
GHSA-4V4C-G2JV-4G25

Affected Products

Lychee