Race condition in Firefox for Android and Mozilla Firefox - CVE-2026-92050
Published: September 15, 2026
Vulnerability identifier: #VU150104
CSH Severity: Medium
CVSS v4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-92050
CWE-ID: CWE-362
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to escape the browser sandbox.
The vulnerability exists due to a race condition in the XPConnect component when handling affected functionality. A remote attacker can trigger the race condition to escape the browser sandbox.
Affected software
Firefox for Android
Mozilla Firefox
Anolis OS
firefox
Mozilla Firefox
Anolis OS
firefox
How to mitigate CVE-2026-92050
Install security update from vendor's website.
Firefox for Android - update to 156.0
Mozilla Firefox - update to 156.0
firefox - update to 140.16.0-1
Mozilla Firefox - update to 156.0
firefox - update to 140.16.0-1