CVE-2026-2803

HIGH

Firefox <148 - Info Disclosure

Title source: llm

Description

Information disclosure, mitigation bypass in the Settings UI component. This vulnerability affects Firefox < 148 and Thunderbird < 148.

References (3)

Scores

CVSS v3 7.5
EPSS 0.0005
EPSS Percentile 16.1%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Classification

CWE
CWE-693 CWE-200
Status published

Affected Products (2)

mozilla/firefox < 148.0
mozilla/thunderbird < 148.0

Timeline

Published Feb 24, 2026
Tracked Since Feb 24, 2026