CVE-2026-1291

MediumCVSS 4.3

Published: 13/06/2026(UTC)Updated: 23/07/2026(UTC)Translated: 25/07/2026(UTC)NVD NIST

Exploitation Probability (EPSS)

Low risk

0.21%

12th percentile - higher than 12% of all known CVEs

Summary

The Meow Gallery plugin for WordPress up to version 5.4.4 is vulnerable to unauthorized data modification via the REST API endpoint /wp-json/meow-gallery/v1/save_shortcode due to a missing capability check. Authenticated attackers with Author-level access can create or overwrite gallery records by supplying a controlled id value.

Risk Assessment

An attacker can overwrite existing galleries or create new ones, potentially leading to site defacement or injection of malicious content.

Recommendation

Update the Meow Gallery plugin to the latest patched version.

Other vulnerabilities in Meow Gallery

CVE-2026-15386Medium
The Meow Gallery WordPress plugin before 5.5.2 does not escape an attachment's alt text before outputting it into an attribute of the link it builds for linked galleries, allowing users with the Author role or above to store a JavaScript payload that executes in the browser of any visitor (including administrators) who views a post containing such a gallery.

Original NVD description (English source)

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.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS