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.
References
| Link | Resource |
|---|---|
| https://bugzilla.mozilla.org/show_bug.cgi?id=2042909 | Permissions Required |
| https://www.mozilla.org/security/advisories/mfsa2026-56/ | Vendor Advisory |
Configurations
History
17 Jun 2026, 16:36
| Type | Values Removed | Values Added |
|---|---|---|
| References | () https://bugzilla.mozilla.org/show_bug.cgi?id=2042909 - Permissions Required | |
| References | () https://www.mozilla.org/security/advisories/mfsa2026-56/ - Vendor Advisory | |
| First Time |
Mozilla
Mozilla firefox Mobile |
|
| CPE | cpe:2.3:a:mozilla:firefox_mobile:*:*:*:*:*:iphone_os:*:* |
16 Jun 2026, 17:16
| Type | Values Removed | Values Added |
|---|---|---|
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 6.5 |
| CWE | CWE-345 |
16 Jun 2026, 13:16
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2026-06-16 13:16
Updated : 2026-06-17 16:36
NVD link : CVE-2026-53899
Mitre link : CVE-2026-53899
CVE.ORG link : CVE-2026-53899
JSON object : View
Products Affected
mozilla
- firefox_mobile
CWE
CWE-345
Insufficient Verification of Data Authenticity