cve.bz

CVE-2026-4700

9.8 criticalEPSS 0.9%

Critical (9.8) in mozilla firefox. EPSS 0.9% chance of exploitation in the next 30 days.

Mitigation bypass in the Networking: HTTP component. This vulnerability was fixed in Firefox 149, Firefox ESR 140.9, Thunderbird 149, and Thunderbird 140.9.

Severity

CVSS 3.1

9.8 critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS
0.9% chance of exploitation in the next 30 days; higher than 60% of CVEs (scores of 2026-10-31)
CWEs
CWE-288, CWE-444
Published
Modified
Record from
the NVD, synced

Affected

References

Check your stackJSON