Security Advisory

CVE-2026-53899

CVE vulnerability detail - eXtreme Datacenter Security Operations

Published 2026-06-16 11:53:04

Last updated 2026-06-16 15:44:21

Assigner mozilla

CVSS score not scored

State PUBLISHED

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.

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