CVE-2026-3220

Summary

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 Software

VendorProductVersion RangeStatus
UnknownAutoptimize0 < 3.1.15affected
UnknownClearfy Cache0 < 2.4.2affected
UnknownSpeed Optimizer0 < 7.7.9affected

Weaknesses

  • CWE-79 Cross-Site Scripting (XSS)

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: poc
    • Automatable: no
    • Technical Impact: total

References