CVE-2022-1009: Wpmudev Smush Image Compression And Optimization

Medium severity, CVSS 6.1. EPSS: 0.8% chance of exploitation in the next 30 days.

The Smush WordPress plugin before 3.9.9 does not sanitise and escape a configuration parameter before outputting it back in an admin page when uploading a malicious preset configuration, leading to a Reflected Cross-Site Scripting. For the attack to be successful, an attacker would need an admin to upload a malicious configuration file

Affected products

• Wpmudev Smush Image Compression And Optimization: before 3.9.9 (fixed in 3.9.9)

Published 2022-05-30. Last modified 2026-06-17.