PT-2026-61915 · Mozilla · Firefox+1

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CVE-2026-16403

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Published

2026-07-21

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Updated

2026-08-31

CVSS v3.1

6.5

Medium

VectorAV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
Name of the Vulnerable Software and Affected Versions Firefox versions prior to 153 Thunderbird versions prior to 153
Description A spoofing issue exists within the Address Bar component, which could allow an attacker to deceive users by manipulating the displayed address.
Recommendations Update Firefox to version 153. Update Thunderbird to version 153.

Fix

UI Misrepresentation of Critical Information

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Weakness Enumeration

Related Identifiers

CVE-2026-16403
OPENSUSE-SU-2026:11358-1
OPENSUSE-SU-2026:11373-1
OPENSUSE-SU-2026:21713-1
SUSE-SU-2026:23411-1

Affected Products

Firefox
Thunderbird