HomeMozillaCVE-2026-0877

CVE-2026-0877

HIGH
8.1CVSS
Published: 2026-01-13
Updated: 2026-01-22
AI Analysis

Description

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

CVSS Metrics

Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
Attack Vector
network
Complexity
low
Privileges
none
User Action
required
Scope
unchanged
Confidentiality
high
Integrity
high
Availability
none
Weaknesses
CWE-693

Metadata

Primary Vendor
MOZILLA
Published
1/13/2026
Last Modified
1/22/2026
Source
NIST NVD
Note: Verify all details with official vendor sources before applying patches.

Affected Products

mozilla : firefoxmozilla : firefoxmozilla : firefoxmozilla : thunderbirdmozilla : thunderbird

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CVE-CVE-2026-0877 | HIGH Severity | CVEDatabase.com | CVEDatabase.com