Meow Gallery <= 5.4.4 - Missing Authorization to Authenticated (Author+) Shortcode creation
Affected versions: *-5.4.4
Vulnerability type: CWE-639 Authorization Bypass Through User-Controlled Key
Affected software, patched versions and attribution
The Meow Gallery plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the REST API endpoint /wp-json/meow-gallery/v1/save_shortcode in all versions up to, and including, 5.4.4 This makes it possible for authenticated attackers, with Author-level access and above, to arbitrarily create or overwrite existing gallery shortcode records by supplying a user-controlled id value. The endpoint performs database update operations without verifying that the requesting user is authorized to modify the referenced gallery record or create their own.
Meow Gallery
Affected versions: *-5.4.4
Patched versions: 5.4.5
Researcher credit: Chawabhon Netisingha (JNX03)
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- Published
- June 12, 2026
- CVSS
- 4.3