5.4
Medium
CVE-2026-9309 Firefox for iOS Reader View did not properly escape HTML tags in JSON-LD metadata
Description
Firefox for iOS Reader View did not properly escape HTML tags in JSON-LD metadata. A malicious page could inject markup that changed Reader View behavior and leaked sensitive URL parameters. These parameters could then be used to access internal pages, potentially resulting in arbitrary JavaScript execution in an internal origin. This vulnerability was fixed in Firefox for iOS 151.2.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Firefox for iOS 151.2 | earliest → < 151.2 | 151.2 |
References
- bugzilla.mozilla.org bugzilla.mozilla.org
- www.mozilla.org www.mozilla.org
Timeline
- Published
- Last modified
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