6.5
Medium
CVE-2026-53899 Firefox for iOS used partial domain matching when attaching cookies to PDF requests, allowing a malicious site on a…
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 products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Firefox for iOS 152.0 | earliest → < 152.0 | 152.0 |
Other CVEs of Firefox for iOS
The 60 CVEs of Firefox for iOS →
CVE-2026-116631
A malicious web page could open a tel link in a window that was showing a different website, causing the phone-call…
5.4
Medium
CVE-2026-116632
A malicious web page could insert arbitrary text into the FaceTime call prompt shown by iOS, potentialy allowing it to…
5.4
Medium
CVE-2026-103417
Firefox for iOS could autofill saved credentials into a new page if cross-origin navigation occurred while the…
5.5
Medium
CVE-2026-103418
Firefox for iOS directly interpolated the page’s HTML language attribute into translation JavaScript, allowing…
8.8
High