Cross-Site Scripting Vulnerability in WPMU DEV Smush Image Compression and Optimization
CVE-2026-120845

6.5MEDIUM

Key Information:

Vendor

WordPress
Status
Smush Image Compression And Optimization
Vendor
CVE Published:
6 November 2026

What is CVE-2026-120845?

The Smush Image Compression and Optimization plugin by WPMU DEV is vulnerable to Cross-Site Scripting (XSS) due to improper handling of input during web page generation. This vulnerability allows attackers to inject malicious scripts into web pages viewed by users, potentially compromising user data and site integrity. Users of the affected versions should take immediate action to update to the patched version to safeguard their websites.

Affected Version(s)

Smush Image Compression and Optimization 0 <= 4.3.5

References

https://patchstack.com/database/wordpress/plugin/wp-smush...
vdb-entry

CVSS V3.1

Score:
6.5
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
Required
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

dzaku | Patchstack Bug Bounty Program
.