Autoptimize, CVE-2026-3220

CVE, Research URL: CVE-2026-3220
Home page URL: Security reports for Autoptimize
Application: Autoptimize
Published on: May 18, 2026
Research Description: The Autoptimize WordPress plugin before 3.1.15, Clearfy Cache WordPress plugin before 2.4.2, Speed Optimizer WordPress plugin before 7.7.9 are vulnerable to unauthenticated Stored Cross-Site Scripting (XSS) due to a predictable replacement hash used during the HTML minification process and abusing a regular expression. This allows an attacker to inject arbitrary HTML attributes in the final HTML output by anticipating the placeholder format.
Affected versions: max 3.1.15.
Status: vulnerable