VULNERABILITY INTELLIGENCE

CVE-2026-53899

CVSS score6.5 MEDIUM
EPSS probability0.10%
CISA KEVNot currently listed
Published2026-06-16
Last modified2026-10-26
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

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.

Weakness classification

  • 134c704f-9b21-4f2e-91b3-4a467353bcc0: CWE-345

Primary references