CVE-2026-84127CWE-200information-disclosure

CVE-2026-84127

Medium · published September 1, 2026

CVSS v3.1
4.3
EPSS
0%
Percentile
16.6
In the wild
Unconfirmed
What it is

Information disclosure in the WebExtensions component in Firefox for Android. This vulnerability was fixed in Firefox 155.

The record
Technical detail
CVSS v3.1
4.3 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
CVSS v4.0
Not supplied
EPSS
0.00259 · 16.6th percentile
Weakness
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=1699444 · [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 12:18Z
    Information disclosure in the WebExtensions component in Firefox for Android
    cvelistv5