CVE-2026-1275

The Multi Post Carousel by Category plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'slides' shortcode attribute in all versions up to, and including, 1.4. This is due to insufficient input sanitization and output escaping on the user-supplied 'slides' parameter in the post_slides_shortcode function. This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

• CWE-79

• https://plugins.trac.wordpress.org/browser/multi-post-carousel/tags/1.4/multi-post-carousel.php#L174
• https://plugins.trac.wordpress.org/browser/multi-post-carousel/trunk/multi-post-carousel.php#L174
• https://www.wordfence.com/threat-intel/vulnerabilities/id/b27ecbf7-e97d-42c0-98d4-c235edf40669?source=cve

Published

Mar 21, 2026

Last Modified

Jun 17, 2026

Status

Deferred

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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