CVE-2026-9309
UNKNOWN
NVD
CVSS Score
0
Severity
UNKNOWN
Published
Jun 01, 2026
Vendor
unknown
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.