CVE-2026-16502
Live Composer <= 2.1.18 - Authenticated (Contributor+) PHP Object Injection via Shortcode
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.
| CWE | CWE-502 |
| Vendor | livecomposer |
| Product | live composer – free wordpress website builder |
| Published | Sep 8, 2026 |
| Last Updated | Sep 8, 2026 |
Get instant alerts for livecomposer live composer – free wordpress website builder
Be the first to know when new high vulnerabilities affecting livecomposer live composer – free wordpress website builder are published — delivered to Slack, Telegram or Discord.
CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H