Stored Cross-Site Scripting Vulnerability in Autoptimize Plugin for WordPress
CVE-2026-2352

6.4MEDIUM

Key Information:

Vendor

WordPress
Status
Autoptimize
Vendor
CVE Published:
20 March 2026

What is CVE-2026-2352?

The Autoptimize plugin for WordPress is susceptible to Stored Cross-Site Scripting due to inadequate input sanitization within the 'ao_post_preload' meta value. This vulnerability affects all versions of the plugin up to and including 3.1.14. Authenticated attackers with Contributor-level access and above can exploit this flaw to insert malicious web scripts into pages, which will execute when those pages are accessed. This issue arises from a failure to properly escape the output when rendering the injected values into a '' tag within the autoptimizeImages.php file. Users with the 'Image optimization' or 'Lazy-load images' settings enabled are particularly at risk.

Affected Version(s)

Autoptimize 0 <= 3.1.14

References

https://www.wordfence.com/threat-intel/vulnerabilities/id...
https://plugins.trac.wordpress.org/browser/autoptimize/ta...
https://plugins.trac.wordpress.org/browser/autoptimize/ta...

CVSS V3.1

Score:
6.4
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Hung Nguyen
.