Name: CVE-2026-84135: Improper Input Validation
Creator: Rapid7
Published: 2026-09-01T00:00:00.000Z
License: https://www.rapid7.com/legal/website-terms-of-use/
Keywords: CVE, CVE-2026-84135, CWE-20, CWE-200, CVSS 9.8, EPSS 0.00449

Other issue in Firefox Focus for Android. This vulnerability was fixed in Firefox 155.

CVSS Details

CVSS 3.1 Base Score: 9.8
CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)

Covered by Rapid7

Product	Vendor Advisory	Solution File	Added	Published
Mfsa2026 82	—	Upgrade to the latest version of Mozilla FirefoxUpgrade to Mozilla Firefox version 155.0	Sep 1, 2026	Sep 1, 2026

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CVSS Details

Covered by Rapid7

Prioritise with Active Threat Intelligence