๐Ÿ” CVE Alert

CVE-2026-84136

CRITICAL 9.8

Other issue in the DOM: Navigation component

CVSS Score
9.8
EPSS Score
0.0%
EPSS Percentile
0th

Other issue in the DOM: Navigation component. This vulnerability was fixed in Firefox 155, Firefox ESR 153.2, Thunderbird 155, and Thunderbird 153.2.

Vendor mozilla
Product firefox
Ecosystems
Industries
Technology
Published Sep 1, 2026
Last Updated Sep 3, 2026
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Affected Versions

Mozilla / Firefox
All versions affected
Mozilla / Thunderbird
All versions affected

References

NVD โ†— CVE.org โ†— EPSS Data โ†—
bugzilla.mozilla.org: https://bugzilla.mozilla.org/show_bug.cgi?id=2048699 mozilla.org: https://www.mozilla.org/security/advisories/mfsa2026-82/ mozilla.org: https://www.mozilla.org/security/advisories/mfsa2026-85/ mozilla.org: https://www.mozilla.org/security/advisories/mfsa2026-86/ mozilla.org: https://www.mozilla.org/security/advisories/mfsa2026-88/

Credits

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