SEPTEMBER 17, 2026
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Case File

CVE-2026-13203

MEDIUM · CVSS 6.4 EPSS 0.24%

Source: NVD + CISA KEV + EPSS · Published 2026-09-01 · Last synced 2026-09-17

CyberRota Analysis

AI-Generated

The Live Composer plugin for WordPress is vulnerable to Stored Cross-Site Scripting (XSS) due to inadequate input sanitization and output escaping of the 'custom_id' shortcode attribute. This flaw allows authenticated attackers with Contributor-level access or higher to inject malicious scripts into pages, which will execute when users visit those pages. WordPress site administrators using this plugin should prioritize patching to mitigate potential exploitation risks.

CVE
CVE-2026-13203
Severity
MEDIUM
CVSS
6.4
EPSS
0.24%
WordPress

Original NVD 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, 2.1.19. 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 <div> 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.