CVE-2026-3220
Multiple Plugins - Unauthenticated Stored XSS via Minify Library
- State
- Published
- Severity
- 8.8 High
- Published
- May 18, 2026
- Updated
- May 18, 2026
- Reserved
- Feb 25, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 8.8 High | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H | CISA-ADP |
Weaknesses
- CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected Products
| Product | Versions |
|---|---|
AutoptimizeUnknown |
|
Clearfy CacheUnknown |
|
Speed OptimizerUnknown |
|
References
- https://wpscan.com/vulnerability/3ceabf11-23cd-4c38-ba14-014348b0ff2d/exploitvdb-entrytechnical-description
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