CVE-2026-9308 | THREATINT

Description

Firefox for iOS Reader View replaced page content in its HTML template before replacing other internal placeholders. A malicious page could include a placeholder string that was later substituted with JSON-LD data, potentially resulting in arbitrary JavaScript execution. This vulnerability was fixed in Firefox for iOS 151.2.

PUBLISHED Reserved 2026-05-22 | Published 2026-06-01 | Updated 2026-06-01 | Assigner mozilla

Product status

151.2 (rpm)

unaffected

Credits

Muneaki Nishimura

References

bugzilla.mozilla.org/show_bug.cgi?id=2039422

www.mozilla.org/security/advisories/mfsa2026-53/

cve.org (CVE-2026-9308)

nvd.nist.gov (CVE-2026-9308)

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