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VULNERABILITIES

CVE-2026-92050 Details

Description

Sandbox escape due to race condition in the XPConnect component. This vulnerability was fixed in Firefox 156 and Thunderbird 156.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: CISA-ADPCVSS-B:9.1 CRITICALVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://bugzilla.mozilla.org/show_bug.cgi?id=2061387 [email protected]
https://www.mozilla.org/security/advisories/mfsa2026-90/ [email protected]
https://www.mozilla.org/security/advisories/mfsa2026-94/ [email protected]

Weakness Enumeration

CWE-IDCWE NameSource
CWE-362Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')CISA-ADP

Affected Products

No affected product data is available for this CVE.

Change History

3 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-92050
NVD Published Date:
Sep 15, 2026
NVD Last Modified:
Sep 21, 2026
Source:
[email protected]