VDB

CVE-2026-84126

CVE-2026-84126 PUBLISHED CVSS 4.3 MEDIUM

Reported by mozilla · Published September 1, 2026

Incorrect boundary conditions in the Layout: Grid component. This vulnerability was fixed in Firefox 155 and Thunderbird 155.

Risk Scores

CVSS 3.1
4.3
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N

Affected Products

VendorProductVersions
MozillaFirefox155
MozillaThunderbird155
MozillaThunderbird155
wolfifirefox0, 0, 0
chainguardfirefox0, 0
MozillaFirefox155

Timeline

  • Sep 1, 2026 Coalition ESS Score
  • Sep 1, 2026 CVE Published
  • Sep 1, 2026 CVE Updated
  • Sep 2, 2026 EPSS Score
  • Sep 4, 2026 EPSS Score
  • Sep 15, 2026 EPSS Score

References

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