CVE-2026-16403 | Spoofing issue in the Address Bar component. This vulnerabil… | CVSS 6.5 MEDIUM

Description

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

CVE ID: CVE-2026-16403
State: PUBLISHED
Assigner: mozilla
Reserved: 2026-07-20 21:57 UTC
Published: 2026-07-21 12:38 UTC
Last updated: 2026-07-22 19:19 UTC
Primary CWE: CWE-451
CWE-451 User Interface (UI) Misrepresentation of Critical In…
Vendor / Product: Mozilla / Firefox
Sources: cve.org · NVD

6.5 MEDIUM CVSS 3.1

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

SSVC — CISA Coordinator

Affected products (2)

Vendor	Product	Platform	Versions
Mozilla	Firefox	—	153 ≤ *
Mozilla	Thunderbird	—	153 ≤ *

Weakness (CWE)

CWE	Source	Description
CWE-451	adp	CWE-451 User Interface (UI) Misrepresentation of Critical Information

CVSS scores (1)

Score	Severity	Version	Source	Vector
6.5	MEDIUM	3.1	adp	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

References (3)