What’s Vulnerable › Vulnerabilities

CVE-2026-16787: Live Composer <= 2.1.19 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'dslc_custom_field' Shortcode

• Severity: medium (CVSS 6.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-01 · updated 2026-09-02
• Weakness: CWE-79

Description

The Live Composer – Free WordPress Website Builder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via 'dslc_custom_field' Shortcode in all versions up to, and including, 2.1.19 due to insufficient input sanitization and output escaping. 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 2.1.19

References

• https://plugins.trac.wordpress.org/browser/live-composer-page-builder/tags/2.1.18/includes/shortcodes.php#L84
• https://plugins.trac.wordpress.org/browser/live-composer-page-builder/tags/2.1.18/includes/shortcodes.php#L88
• https://plugins.trac.wordpress.org/browser/live-composer-page-builder/tags/2.1.18/includes/shortcodes.php#L89
• https://plugins.trac.wordpress.org/changeset?reponame=&old=3662813%40live-composer-page-builder&new=3662813%40live-composer-page-builder
• https://www.wordfence.com/threat-intel/vulnerabilities/id/91febd9e-0b46-4f67-9ba0-97c01bf1c699?source=cve

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