VULNERABILITY INTELLIGENCE
CVE-2026-3220
CVSS score8.8 HIGH
EPSS probability0.32%
CISA KEVNot currently listed
Published2026-05-18
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
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.
Weakness classification
- 134c704f-9b21-4f2e-91b3-4a467353bcc0: CWE-79