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CVE-2025-13537: Live Composer – Free WordPress Website Builder <= 2.0.2 - Authenticated (Contributor+) DOM-Based Stored Cross-Site Scripting

• Severity: medium (CVSS 6.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-12-17 · updated 2026-06-17
• Weakness: CWE-79

Description

The Live Composer – Free WordPress Website Builder plugin for WordPress is vulnerable to multiple Stored Cross-Site Scripting vulnerabilities via DOM manipulation in all versions up to, and including, 2.0.2 due to insufficient input sanitization and output escaping on user-supplied attributes. 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.

Affected products

• livecomposer Live Composer – Free WordPress Website Builder: through 2.0.2

References

• https://plugins.trac.wordpress.org/browser/live-composer-page-builder/trunk/js/src/client/frontend/index.js#L126
• https://plugins.trac.wordpress.org/browser/live-composer-page-builder/trunk/js/src/client/frontend/index.js#L926
• https://plugins.trac.wordpress.org/changeset/3419715/
• https://www.wordfence.com/threat-intel/vulnerabilities/id/a9f8ab73-8c2a-4551-bad9-4e5cc67231e5?source=cve

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