CVE-2026-84127

Information disclosure in the WebExtensions component in Firefox for Android

State: Published
Severity: 4.3 Medium
Published: Sep 1, 2026
Updated: Sep 1, 2026
Reserved: Sep 1, 2026

Description

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

Scores

CVSS	Score	Vector	Source
3.1	4.3 Medium	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N	CISA-ADP

Weaknesses

CWE-200 Exposure of Sensitive Information to an Unauthorized Actor

Affected Products

Product	Versions
FirefoxMozilla	155 and laterNot affected

References

https://bugzilla.mozilla.org/show_bug.cgi?id=1699444
https://www.mozilla.org/security/advisories/mfsa2026-82/

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