CVE-2026-16391 PUBLISHED

Information disclosure in the Storage: IndexedDB component. This vulnerability was fixed in Firefox 153 and Firefox ESR 140.13.

• Tomoya Nakanishi

• https://bugzilla.mozilla.org/show_bug.cgi?id=2044536
• https://www.mozilla.org/security/advisories/mfsa2026-68/
• https://www.mozilla.org/security/advisories/mfsa2026-70/