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CVE-2026-53899

nvd nist
Published: Jun 16, 2026Modified: Jun 17, 2026

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6.5
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Exploitability: 3.9 / Impact: 2.5
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary)

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 (1)

Mozilla
1 product
Firefox Mobile
Configuration A
1 vulnerable
Vulnerable SoftwareAffected Versions
Firefox Mobile
Before 152.0

Related CWEs

CWE-345
Insufficient Verification of Data Authenticity
The product does not sufficiently verify the origin or authenticity of data, in a way that causes it to accept invalid data.

References (2)

Source: security@mozilla.org
Permissions Required
Source: security@mozilla.org
Vendor Advisory

Timeline

No history available yet.