VULNERABILITY INTELLIGENCE

CVE-2026-4700

CVSS score9.8 CRITICAL
EPSS probability0.92%
CISA KEVNot currently listed
Published2026-03-24
Last modified2026-07-15
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Description

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

Weakness classification

  • nvd@nist.gov: NVD-CWE-noinfo
  • 134c704f-9b21-4f2e-91b3-4a467353bcc0: CWE-288
  • 0b0ca135-0b70-47e7-9f44-1890c2a1c46c: CWE-444

Primary references