What the vulnerability does
01Description
The ACF Photo Gallery Field plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the "acf_photo_gallery_edit_save" function in all versions up to, and including, 3.0. This makes it possible for authenticated attackers, with subscriber level access and above, to modify the title, caption, and custom metadata of arbitrary media attachments.
Explanation of Vulnerability in Simple Terms
02Summary
ACF Photo Gallery Field versions 3.0 and earlier lack proper authorization checks on certain operations. A logged-in user with low privileges can modify data they should not have access to. The vulnerability requires an active user account but no special interaction from the victim.
What an attacker can do
03Attacker Capabilities
Modify photo gallery data or settings that should be restricted to higher-privilege users.
Potential impact on your site
04Site Impact
Unauthorized users can alter gallery content, potentially defacing or corrupting photo galleries managed by the plugin.
Conditions required to exploit
05Prerequisites
Attacker must have a low-privilege user account on the site (e.g., subscriber or contributor role).
Key dates
06Disclosure timeline
February 19, 2026
CVE published
April 8, 2026
Record updated