VDB

CVE-2026-8964

CVE-2026-8964 PUBLISHED CVSS 7.5 HIGH

Spoofing issue in the Popup Blocker component. This vulnerability was fixed in Firefox 151 and Thunderbird 151.

EPSS 0.03% · 9.9th percentile

Risk Scores

CVSS 3.1
7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
EPSS Score
0.03%
9.9th percentile

Affected Products

VendorProductVersions
MozillaFirefox151
MozillaThunderbird151

Timeline

  • May 19, 2026 CVE Published
  • May 19, 2026 CVE Updated
  • May 20, 2026 EPSS Score
  • May 20, 2026 Coalition ESS Score
  • May 20, 2026 Security Advisory
  • May 21, 2026 EPSS Score
  • May 22, 2026 EPSS Score
  • May 23, 2026 EPSS Score
  • May 24, 2026 EPSS Score
  • May 25, 2026 EPSS Score
  • May 26, 2026 EPSS Score
  • May 27, 2026 EPSS Score
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