CVE-2026-84139
Unknown
Last modified
CVE-2026-84139 is a vulnerability of currently unknown severity. Clickjacking issue in the DOM: Events component. This vulnerability was fixed in Firefox 155 and Firefox ESR 153.2..
Description
Clickjacking issue in the DOM: Events component. This vulnerability was fixed in Firefox 155 and Firefox ESR 153.2.
Affected Software
Source: CNA advisory (CVE.org). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| Mozilla | Firefox | All versions |
References
Timeline
- Published
- Last Modified
- Status
- Received
Frequently Asked Questions
What is CVE-2026-84139?
Clickjacking issue in the DOM: Events component. This vulnerability was fixed in Firefox 155 and Firefox ESR 153.2.
How severe is CVE-2026-84139?
Severity scoring for CVE-2026-84139 is pending analysis.
How do I fix CVE-2026-84139?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2026
- CVE-2026-84133Site isolation issue in the DOM: Push Subscriptions componen…
- CVE-2026-84134Other issue in the Profile Backup component. This vulnerabil…
- CVE-2026-84135Other issue in Firefox Focus for Android. This vulnerability…
- CVE-2026-84136Other issue in the DOM: Navigation component. This vulnerabi…
- CVE-2026-84137Spoofing issue in the DOM: Core & HTML component. This vulne…
- CVE-2026-84138Denial-of-service in the PDF Viewer component. This vulnerab…
- CVE-2026-8414Concrete CMS 9 before 9.5.0 is vulnerable to Cross Site Requ…8.8
- CVE-2026-84140Site isolation issue in the DOM: Navigation component. This …
- CVE-2026-84141Integer overflow in the Graphics: ImageLib component. This v…
- CVE-2026-84142Internally found bugs present in Firefox 154. Some of these …
- CVE-2026-84143Internally found bugs present in Firefox 154, Firefox ESR 15…
- CVE-2026-84144Internally found bugs present in Firefox 154 and Firefox ESR…
Are you affected by CVE-2026-84139?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST