AUGUST 4, 2026
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Case File

CVE-2026-0877

HIGH · CVSS 8.1 EPSS 0.42%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2026-01-13 · Last synced 2026-08-04

CyberRota Analysis

This is a high severity vulnerability with a CVSS score of 8.1. It affects Firefox.

CVE
CVE-2026-0877
Severity
HIGH
CVSS
8.1
EPSS
0.42%
Firefox

Original NVD Description

Mitigation bypass in the DOM: Security component. This vulnerability was fixed in Firefox 147, Firefox ESR 115.32, Firefox ESR 140.7, Thunderbird 147, and Thunderbird 140.7.

Related CVEs

Other vulnerabilities affecting the same vendor(s)

CVE-2026-16412 CRITICAL CVE-2026-16411 CRITICAL CVE-2026-16410 CRITICAL CVE-2026-16409 HIGH CVE-2026-16408 CRITICAL CVE-2026-16407 CRITICAL