medium6.5
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 …
Impact
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 products
| Vendor | Product | Affected versions |
|---|---|---|
| Mozilla | Firefox Mobile | before 152.0 |