CVE-2022-22755: Mozilla Firefox

High severity, CVSS 8.8. EPSS: 0.6% chance of exploitation in the next 30 days.

By using XSL Transforms, a malicious webserver could have served a user an XSL document that would continue to execute JavaScript (within the bounds of the same-origin policy) even after the tab was closed. This vulnerability affects Firefox < 97.

Affected products

• Mozilla Firefox: before 97.0 (fixed in 97.0)

Published 2022-12-22. Last modified 2026-06-17.