🔐 CVE Alert

CVE-2026-8966

HIGH 7.5

Information disclosure in the IP Protection component

CVSS Score
7.5
EPSS Score
0.0%
EPSS Percentile
4th

Information disclosure in the IP Protection component. This vulnerability was fixed in Firefox 151 and Thunderbird 151.

Vendor mozilla
Product firefox
Ecosystems
Industries
Technology
Published May 19, 2026
Last Updated May 20, 2026
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Affected Versions

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

References

NVD ↗ CVE.org ↗ EPSS Data ↗
bugzilla.mozilla.org: https://bugzilla.mozilla.org/show_bug.cgi?id=2025849 mozilla.org: https://www.mozilla.org/security/advisories/mfsa2026-46/ mozilla.org: https://www.mozilla.org/security/advisories/mfsa2026-50/

Credits

Rintaro Kobayashi