cvedb.io
CVE-2026-9309
MEDIUM · CVSS 5.4
EPSS exploitation probability: 0%
Published 2026-06-01T13:16:33.623 · Last modified 2026-06-17T11:05:02.830

Summary

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

mozilla — firefox

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.