CVE-2026-92030
MEDIUMCVSS 5.4/10EPSS 0.24%
Last modified
CVE-2026-92030 is a medium-severity vulnerability rated 5.4/10 on the CVSS scale. Mitigation bypass in the DOM: Copy & Paste and Drag & Drop component. This vulnerability was fixed in Firefox 156, Firefox ESR 140.16, Firefox ESR 153.3, Thunderbird 156, Thunderbird 140.16, and Thunderbird 153.3.. EPSS estimates a 0.24% chance of exploitation in the next 30 days.
Description
Mitigation bypass in the DOM: Copy & Paste and Drag & Drop component. This vulnerability was fixed in Firefox 156, Firefox ESR 140.16, Firefox ESR 153.3, Thunderbird 156, Thunderbird 140.16, and Thunderbird 153.3.
Metrics
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Mozilla | Firefox | < 140.16.0 |
| Mozilla | Firefox | >= 141.0, < 153.3.0 |
| Mozilla | Firefox | >= 154.0.0, < 156.0.0 |
| Mozilla | Thunderbird | < 140.16.0 |
| Mozilla | Thunderbird | >= 141.0, < 153.3.0 |
| Mozilla | Thunderbird | >= 154.0, < 156.0 |
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=2058417Permissions Required
- https://www.mozilla.org/security/advisories/mfsa2026-90/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2026-92/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2026-93/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2026-94/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2026-95/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2026-96/Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2026-92030?
Mitigation bypass in the DOM: Copy & Paste and Drag & Drop component. This vulnerability was fixed in Firefox 156, Firefox ESR 140.16, Firefox ESR 153.3, Thunderbird 156, Thunderbird 140.16, and Thunderbird 153.3.
How severe is CVE-2026-92030?
CVE-2026-92030 has a CVSS score of 5.4/10 (MEDIUM severity). The EPSS model estimates a 0.24% probability of exploitation in the next 30 days.
How do I fix CVE-2026-92030?
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-2026-92025Use-after-free in the DOM: Navigation component. This vulner…8.8
- CVE-2026-92026Use-after-free in the Networking component. This vulnerabili…8.8
- CVE-2026-92027Use-after-free in the DOM: Streams component. This vulnerabi…8.8
- CVE-2026-92028Use-after-free in the DOM: Core & HTML component. This vulne…8.8
- CVE-2026-92029Use-after-free in the SVG component. This vulnerability was …8.8
- CVE-2026-9203A server-side request forgery vulnerability in Progress Mark…8.5
- CVE-2026-92031Information disclosure in the Graphics: ImageLib component. …6.5
- CVE-2026-92032Sandbox escape due to invalid pointer in the Graphics compon…9.6
- CVE-2026-92033Privilege escalation in Firefox for Android. This vulnerabil…8.8
- CVE-2026-92034Site isolation issue in the Graphics component. This vulnera…9.1
- CVE-2026-92035Sandbox escape due to incorrect boundary conditions in the G…9.6
- CVE-2026-92036Incorrect boundary conditions in the Networking: HTTP compon…9.8
Are you affected by CVE-2026-92030?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST