OCTOBER 6, 2026
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Case File

CVE-2026-100828

CRITICAL · CVSS 9.6 EPSS 0.27%

Source: NVD + CISA KEV + EPSS · Published 2026-09-29 · Last synced 2026-10-06

CyberRota Analysis

AI-Generated

A mitigation bypass vulnerability exists in the Bookmarks & History component of Firefox, potentially allowing attackers to exploit weaknesses in the handling of user data. Users of affected Firefox versions should prioritize updating to Firefox ESR 153.4 or Firefox 157 to safeguard against potential data exposure or manipulation. Organizations relying on Firefox for secure browsing should assess their deployment and ensure timely updates to mitigate this risk.

CVE
CVE-2026-100828
Severity
CRITICAL
CVSS
9.6
EPSS
0.27%
Firefox

Original NVD Description

Mitigation bypass in the Bookmarks & History component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, Thunderbird 153.4, and Firefox 157.