Is CVE-2026-39957 actively exploited?

No active exploitation of CVE-2026-39957 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-39957 be exploited remotely?

Yes. CVE-2026-39957 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-39957?

CVE-2026-39957 has a CVSS score of 2.3 (LOW).

HOME VULNERABILITIESCVE-2026-39957

LOW

CVE-2026-39957

CWE-863Published: April 9, 2026· Updated: Apr 13, 2026

2.3

CVSS v3.1

EPSS:0.03%probability of exploitation in 30 daysPercentile:8.5th

Official 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.

NVD Source

Technical Analysis

CVE-2026-39957 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

CVSS v3.1 Vector Breakdown

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges Req.Low

User InteractionNone

ScopeX

Impact

Confidentiality

Integrity

Availability

CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X