CVE-2025-11828

The Magazine Companion plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'headerHtmlTag' attribute in the bnm-blocks/featured-posts-1 block in all versions up to, and including, 1.2.3. This is due to insufficient input sanitization and output escaping when using user-supplied values as HTML tag names. 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.

CVSS 3.1

6.4CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

EPSS

0.2% chance of exploitation in the next 30 days; higher than 14% of CVEs (scores of 2026-10-25)

CWE

CWE-79

Published

2025-11-11

Modified

2026-10-18

Record from

the NVD, synced 2026-10-19

References

• https://plugins.trac.wordpress.org/browser/bnm-blocks/tags/1.2.3/src/blocks/posts/featured-posts-1/view.php#L34
• https://plugins.trac.wordpress.org/changeset/3392064/
• https://wordpress.org/plugins/bnm-blocks
• https://www.wordfence.com/threat-intel/vulnerabilities/id/8fa2e98b-5054-46fd-b22e-eac59b581a3c?source=cve

Check your stackJSON