CVE-2026-84139 PUBLISHED

Clickjacking issue in the DOM: Events component. This vulnerability was fixed in Firefox 155 and Firefox ESR 153.2.

• Long Nguyen

• https://bugzilla.mozilla.org/show_bug.cgi?id=2060153
• https://www.mozilla.org/security/advisories/mfsa2026-82/
• https://www.mozilla.org/security/advisories/mfsa2026-85/