SB2026052526 - Spoofing attack in Mozilla Firefox for iOS

Description

This security bulletin contains information about 1 vulnerability.

1) Spoofing attack (CVE-ID: CVE-2026-9078)

CWE-ID: CWE-451 - User Interface (UI) Misrepresentation of Critical Information (Clickjacking, spoofing)

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear

The vulnerability allows a remote attacker to spoof a trusted origin.

The vulnerability exists due to improper rendering of right-to-left and internationalized domain names in link preview UI surfaces when displaying a specially crafted hostname. A remote attacker can provide a specially crafted link to spoof a trusted origin.

Remediation

Install update from vendor's website.

References

• https://www.mozilla.org/en-US/security/advisories/mfsa2026-52/
• https://bugzilla.mozilla.org/show_bug.cgi?id=2029371