The Ultimate Member WordPress plugin before 2.12.0 does not properly sanitise and escape the value of custom textarea profile fields before outputting it on user profiles, allowing authenticated users with Subscriber-level access and above to store JavaScript that executes when any user, including an administrator, views the affected profile.
The CVSS severity warrants an early asset and exposure review.
The Ultimate Member WordPress plugin before 2.12.0 does not properly sanitise and escape the value of custom textarea profile fields before outputting it on user profiles, allowing authenticated users with Subscriber-level access and above to store JavaScript that executes when any user, including an administrator, views the affected profile.
Confirm exposure before applying a vendor-supported change.
Confirm that Ultimate Member and an affected version are present.
Combine exploitation signals with asset exposure and business criticality.
Follow the vendor advisory or supported update path and preserve rollback options.
Recheck the version, service health, access paths, and relevant logs.
