CVE-2026-84135CWE-20CWE-200information-disclosure

CVE-2026-84135

Critical · published September 1, 2026

CVSS v3.1
9.8
EPSS
0%
Percentile
38.1
In the wild
Unconfirmed
What it is

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

The record
Technical detail
CVSS v3.1
9.8 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00449 · 38.1th percentile
Weaknesses
CWE-20 · Improper Input Validation; CWE-200 · Exposure of Sensitive Information to an Unauthorized Actor
Published
2026-09-01T17:20Z
Affected products (1)
ProductVersionsFixed in
mozilla/firefox_mobile< 155.0155.0
References (2)
https://bugzilla.mozilla.org/show_bug.cgi?id=2046661 · [email protected]https://www.mozilla.org/security/advisories/mfsa2026-82/ · [email protected]
EPSS history
Timeline
  • 03 SEP 03:32Z
    EPSS moved — → 0%
    epss
  • 01 SEP 12:19Z
    Other issue in Firefox Focus for Android
    cvelistv5