Medium severity5.4NVD Advisory· Published Jun 1, 2026· Updated Jun 3, 2026
CVE-2026-9309
CVE-2026-9309
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
4< 151.2+ 1 more
- (no CPE)range: < 151.2
- (no CPE)range: >=151.2
- osv-coords2 versions
< 0+ 1 more
- (no CPE)range: < 0
- (no CPE)range: < 0
Patches
Vulnerability mechanics
References
2- www.mozilla.org/security/advisories/mfsa2026-53/nvdVendor Advisory
- bugzilla.mozilla.org/show_bug.cginvdPermissions Required
News mentions
1- Mozilla Firefox: Four Vulnerabilities Disclosed Across JavaScript Engine and iOS Reader ViewVypr Intelligence · Jun 2, 2026