CVE-2026-96531: Optimole 4.0.0 - 4.2.12 - Author+ Stored XSS via Video Player Block

Q: Which users can exploit this issue, and who is at risk from the stored script?

A user with the Author role or higher can store a malicious event-handler attribute in a video-player block. The script executes in the browser of any user who views the affected post, including administrators.

Q: Which plugin versions are affected and what version fixes the issue?

Optimole versions 4.0.0 through 4.2.12 are affected. Version 4.2.13 and later are not affected by the described issue.

Published Sep 26, 2026

Updated

The Optimole WordPress plugin before 4.2.13 does not escape unrecognized attributes of its video-player block before rendering them onto the block's wrapper element, allowing users with the Author role and above to store an event-handler attribute that executes scripts in the browser of any user, such as an administrator, who views the post.

Affected Software

1 affected component

Optimole Optimole WordPress plugin>=4.0.0<=4.2.12

Event History

Sep 26, 2026

CVE Published

via MITRE·06:00 AM

Data Sourced

via MITRE·06:00 AM

DescriptionWeakness

Frequently Asked Questions

Which users can exploit this issue, and who is at risk from the stored script?

A user with the Author role or higher can store a malicious event-handler attribute in a video-player block. The script executes in the browser of any user who views the affected post, including administrators.

Which plugin versions are affected and what version fixes the issue?

Optimole versions 4.0.0 through 4.2.12 are affected. Version 4.2.13 and later are not affected by the described issue.