CVE-2026-16403

MEDIUM

Mozilla Firefox Address Bar - Spoofing

Title source: manual
STIX 2.1

Description

Spoofing issue in the Address Bar component. This vulnerability was fixed in Firefox 153 and Thunderbird 153.

Scores

CVSS v3 6.5
EPSS 0.0020
EPSS Percentile 9.9%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-451
Status published
Products (4)
mozilla/firefox < 153.0.0
Mozilla/Firefox 153
mozilla/thunderbird < 153.0
Mozilla/Thunderbird 153
Published Jul 21, 2026
Tracked Since Jul 21, 2026