Information disclosure in Mozilla Firefox and Firefox for Android - CVE-2026-124944
Published: November 10, 2026
Vulnerability identifier: #VU164584
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-124944
CWE-ID: CWE-200
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to disclose sensitive information.
The vulnerability exists due to inadequate information protection in Firefox's Marionette component when handling automation operations. A remote attacker can exploit the disclosure weakness to potentially obtain information that should not be exposed.
Affected software
Mozilla Firefox
Firefox for Android
Firefox for Android
How to mitigate CVE-2026-124944
Install security update from vendor's website.
Mozilla Firefox - update to 160.0
Firefox for Android - update to 160.0
Firefox for Android - update to 160.0