CVE-2026-13203 - Live Composer = 2.1.19 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'custom_id' Shortcode Attribute
Brief
CVE ID : CVE-2026-13203
Published : Sept. 1, 2026, 4:27 a. m.
- 48 minutes ago
Description : The Live Composer – Free WordPress Website Builder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'custom_id' shortcode attribute of the dslc_modules_section and dslc_modules_area shortcodes in versions up to, and including, 2.
- 19.
This is due to insufficient input sanitization and output escaping on the user-supplied attribute, which is concatenated into the HTML id="" attribute of the rendered element in the dslc_modules_section_front() and dslc_modules_area_front() functions without esc_attr().
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.
Severity: 0.0
- NA