CVE-2026-16502
HighCVSS 8.8Summary
The Live Composer – Free WordPress Website Builder plugin for WordPress is vulnerable to PHP Object Injection in all versions up to, and including, 2.1.18 via deserialization of untrusted input. This makes it possible for authenticated attackers with contributor-level access and above to inject a PHP Object. No known POP chain is present in the vulnerable software, meaning no impact unless another plugin or theme with a POP chain is installed. If a POP chain is present, it may allow actions like deleting arbitrary files, retrieving sensitive data, or executing code.
Risk Assessment
Risk of remote code execution or file manipulation if an additional component with a POP chain is installed on the system.
Recommendation
Recommend updating the plugin to a patched version, restricting access to low-privileged accounts, and auditing installed plugins and themes for POP chains.
Other vulnerabilities in Live Composer
See all- CVE-2026-16788Medium
The Live Composer plugin for WordPress is vulnerable to Stored Cross-Site Scripting via dslc_module_projects_output Shortcode in all versions up to and including 2.1.19 due to insufficient input sanitization and output escaping. This allows authenticated attackers with contributor-level access and above to inject arbitrary web scripts in pages that execute whenever a user accesses the page.
- CVE-2026-16786Medium
The Live Composer plugin for WordPress is vulnerable to Stored Cross-Site Scripting via dslc_module_testimonials_output Shortcode in all versions up to and including 2.1.19 due to insufficient input sanitization and output escaping. This allows authenticated attackers with contributor-level access and above to inject arbitrary web scripts in pages that execute whenever a user accesses the page.
Original NVD description (English source)
The Live Composer – Free WordPress Website Builder plugin for WordPress is vulnerable to PHP Object Injection in all versions up to, and including, 2.1.18 via deserialization of untrusted input . This makes it possible for authenticated attackers, with contributor-level access and above, to inject a PHP Object. No known POP chain is present in the vulnerable software, which means this vulnerability has no impact unless another plugin or theme containing a POP chain is installed on the site. If a POP chain is present via an additional plugin or theme installed on the target system, it may allow the attacker to perform actions like delete arbitrary files, retrieve sensitive data, or execute code depending on the POP chain present.