CVE-2026-6762

MEDIUM

Mozilla Firefox and Thunderbird 115.35, 140.10, and 150 - DOM Spoofing

Title source: manual
STIX 2.1

Description

Spoofing issue in the DOM: Core & HTML component. This vulnerability was fixed in Firefox 150, Firefox ESR 115.35, Firefox ESR 140.10, Thunderbird 150, and Thunderbird 140.10.

References (6)

Core 6

Scores

CVSS v3 6.3
EPSS 0.0016
EPSS Percentile 5.2%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-290
Status published
Products (8)
mozilla/firefox < 140.10.0
mozilla/firefox < 150.0
Mozilla/Firefox 115.35 - 115.*
Mozilla/Firefox 140.10 - 140.*
Mozilla/Firefox 150
mozilla/thunderbird 140.0 - 140.10.0
Mozilla/Thunderbird 140.10 - 140.*
Mozilla/Thunderbird 150
Published Apr 21, 2026
Tracked Since Apr 21, 2026