CVE-2022-4481: Mesmerize Companion < 1.6.135 - Contributor+ Stored XSS

Severity: medium (CVSS 5.4 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.6% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2023-01-16 · updated 2026-06-17

Description

The Mesmerize Companion WordPress plugin before 1.6.135 does not validate and escape some of its shortcode attributes before outputting them back in the page, which could allow users with a role as low as contributor to perform Stored Cross-Site Scripting attacks which could be used against high privilege users such as admins.

Affected products

Mesmerize Companion: before 1.6.135 — fixed in 1.6.135

How to fix

Upgrade to a fixed version: Mesmerize Companion 1.6.135. Check the vendor advisory for mitigations.

References

https://wpscan.com/vulnerability/9dc9d377-635d-4d4f-9916-33bcedbba6f0
https://wpscan.com/vulnerability/9dc9d377-635d-4d4f-9916-33bcedbba6f0

Get alerted when CVE-2022-4481 or the next vulnerability affects your stack