Stored Cross-Site Scripting Flaw in Asset CleanUp Plugin for WordPress
CVE-2026-13354

7.2HIGH

Key Information:

Vendor

WordPress
Status
Asset Cleanup: Page Speed Booster
Vendor
CVE Published:
19 September 2026

What is CVE-2026-13354?

The Asset CleanUp: Page Speed Booster plugin for WordPress has a vulnerability due to inadequate input sanitization and output escaping, allowing attackers to exploit comment content. This flaw enables unauthorized users to inject arbitrary web scripts into pages accessed by users, creating significant security risks. The vulnerability is particularly concerning in environments where the 'combine_loaded_css' feature is activated, potentially leading to further exploitation.

Affected Version(s)

Asset CleanUp: Page Speed Booster 0 <= 1.4.0.5

References

https://www.wordfence.com/threat-intel/vulnerabilities/id...
https://plugins.trac.wordpress.org/browser/wp-asset-clean...
https://plugins.trac.wordpress.org/browser/wp-asset-clean...

CVSS V3.1

Score:
7.2
Severity:
HIGH
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Pham Duc Anh
.