CVE-2026-53899

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...

CVE-2026-53899: Insufficient Verification of Data Authenticity

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...

PT-2026-49700

Name of the Vulnerable Software and Affected Versions Firefox for iOS versions prior to 152.0 Description Firefox for iOS used partial domain matching when attaching cookies to PDF requests. This behavior allows a malicious site hosted on a suffix domain to receive cookies belonging to the target...