Is CVE-2026-6566 actively exploited?

No active exploitation of CVE-2026-6566 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-6566 be exploited remotely?

Yes. CVE-2026-6566 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-6566?

CVE-2026-6566 has a CVSS score of 4.3 (MEDIUM).

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MEDIUM

CVE-2026-6566

CWE-639Published: May 20, 2026· Updated: May 20, 2026

4.3

CVSS v3.1

EPSS:0.01%probability of exploitation in 30 daysPercentile:0.7th

Official Description

The Photo Gallery, Sliders, Proofing and Themes – NextGEN Gallery plugin for WordPress is vulnerable to Insecure Direct Object Reference in versions up to and including 4.2.0. This is due to insufficient object-level authorization in the image deletion REST flow where the permission callback for DELETE /imagely/v1/images/{id} only checks 'NextGEN Manage gallery' permissions and does not enforce gallery ownership or 'NextGEN Manage others gallery' permissions. This makes it possible for authenticated attackers, with Subscriber-level privileges and 'NextGEN Manage gallery' capability, to delete gallery images belonging to other users as well as their associated image files from disk when deleteImg is enabled (default).

NVD Source

Technical Analysis

CVE-2026-6566 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.