CVE-2026-16258: Unknown AJAX Search Lite

Critical severity, CVSS 9.8. EPSS: 0.8% chance of exploitation in the next 30 days.

The Ajax Search Lite WordPress plugin before 4.14.5 does not prevent the deserialization of untrusted input, allowing unauthenticated attackers to perform PHP Object Injection. When a suitable POP chain is present via another installed Ajax Search Lite WordPress plugin before 4.14.5 or , this can be leveraged to achieve Remote Code Execution.

Affected products

• Unknown AJAX Search Lite: before 4.14.5 (fixed in 4.14.5)

Published 2026-08-07. Last modified 2026-08-26.