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CVE-2026-4700

nvd nist
Published: Mar 24, 2026Modified: Jun 17, 2026

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9.8
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Exploitability: 3.9 / Impact: 5.9
Source: NVD

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.

Affected (2)

Products: Mozilla: Firefox
Mozilla
1 product
Firefox
Configuration A
2 vulnerable
Vulnerable SoftwareAffected Versions
Mozilla
Firefox
Before 149.0
Firefox
Before 140.9.0

Related CWEs

CWE-288
Authentication Bypass Using an Alternate Path or Channel
A product requires authentication, but the product has an alternate path or channel that does not require authentication.

References (5)

Source: security@mozilla.org
Permissions Required
Source: security@mozilla.org
Vendor Advisory
Source: security@mozilla.org
Vendor Advisory
Source: security@mozilla.org
Source: security@mozilla.org

Timeline

No history available yet.