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CVE-2026-53899

MEDIUM CVSS: 6.5 Published: 2026-06-16 Modified: 2026-06-17

Description

Firefox for iOS used partial domain matching when attaching cookies to PDF requests, allowing a malicious site on a suffix domain to receive cookies belonging to the target site. This vulnerability was fixed in Firefox for iOS 152.0.

Affected Platforms

Mozilla Firefox Mobile

Weakness Type

CWE-345

References