CVE-2026-16371: Vulnerability in Mozilla Firefox
Description
CVE-2026-16371 is a privilege escalation vulnerability in the DOM Navigation component of Mozilla Firefox. It was fixed in Firefox 153 and Firefox ESR 140.13. The vulnerability allows an attacker to escalate privileges within the browser context. The CVSS score is 8.8, indicating high severity. No known exploits in the wild have been reported. Users should update to the fixed versions to remediate this issue.
CVSS v3.1
Score 8.8high
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves privilege escalation in the DOM Navigation component of Mozilla Firefox. It was addressed and fixed in Firefox version 153 and Firefox ESR 140.13. The CVSS v3.1 base score is 8.8, reflecting a high-impact vulnerability with network attack vector, low attack complexity, no privileges required, user interaction required, and high impact on confidentiality, integrity, and availability. The vendor advisory confirms the fix and provides no indication of active exploitation.
Potential Impact
Successful exploitation of this vulnerability could allow an attacker to escalate privileges within the browser, potentially leading to unauthorized actions or access. The high CVSS score indicates significant impact on confidentiality, integrity, and availability of the affected system. However, there are no known exploits in the wild at this time.
Mitigation Recommendations
A fix is available and users should update to Firefox 153 or Firefox ESR 140.13 or later to remediate this vulnerability. No additional mitigation steps are indicated by the vendor advisory.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-8rfc-phx9-6vc2
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-16371"]
- State
- PUBLISHED
Threat ID: 6a5fd1591010f89cc21c9d21
Added to database: 07/21/2026, 20:06:49 UTC
Last enriched: 09/12/2026, 09:17:10 UTC
Last updated: 10/19/2026, 06:48:15 UTC
Views: 101
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