Name: CVE-2021-4226: Insufficient Verification of Data Authenticity
Creator: Rapid7
Published: 2022-12-15T00:00:00.000Z
License: https://www.rapid7.com/legal/website-terms-of-use/
Keywords: CVE, CVE-2021-4226, CWE-345, CVSS 9.8, EPSS 0.00515

RSFirewall tries to identify the original IP address by looking at different HTTP headers. A bypass is possible due to the way it is implemented.

CVSS Details

CVSS 3.1 Base Score: 9.8
CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)

Covered by Rapid7

Product	Vendor Advisory	Solution File	Added	Published
Rsfirewall Plugin	—	Update rsfirewall plugin to version 1.1.25, or a newer patched version	May 15, 2025	Apr 13, 2022

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CVSS Details

Covered by Rapid7

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