CVE-2021-4226 - Vulnerability Details - OpenCVE

Description

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.

Published: 2022-12-15

Score: 9.8 Critical

EPSS: < 1% Very Low

KEV: No

Impact:

Action:

Analysis

Analysis and contextual insights are available on OpenCVE Cloud.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

Unknown

RSFirewall!

unaffected

Version	Status	Constraints
`0`	affected	< 1.1.25

Configuration 1 [-]

cpe:2.3:a:rsjoomla:rsfirewall\!:*:*:*:*:*:wordpress:*:*

No data.

No data available yet.

Remediation

No vendor fix or workaround currently provided.

Additional remediation guidance may be available on OpenCVE Cloud.

Tracking

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Advisories

Source	ID	Title
EUVD	EUVD-2021-34084	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.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00138.

Exploitation poc

Automatable yes

Technical Impact total

References

Link	Providers
https://wpscan.com/vulnerability/c0ed80c8-ebbf-4ed9-b02f-31660097c352

History

Tue, 27 May 2025 21:30:00 +0000

Type	Values Removed	Values Added
Weaknesses		NVD-CWE-noinfo

Mon, 21 Apr 2025 15:15:00 +0000

Type	Values Removed	Values Added
Weaknesses		CWE-345
Metrics		ssvc `{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}`

Subscriptions

Rsjoomla Rsfirewall\!

MITRE

Status: PUBLISHED

Assigner: WPScan

Published: 2022-12-15T17:14:40.696Z

Updated: 2025-04-21T14:18:04.471Z

Reserved: 2022-04-10T06:55:50.348Z

Link: CVE-2021-4226

Vulnrichment

Updated: 2024-08-03T17:16:04.258Z

NVD

Status : Analyzed

Published: 2022-12-15T19:15:16.410

Modified: 2025-05-27T21:06:17.210

Link: CVE-2021-4226

Redhat

No data.

OpenCVE Enrichment

No data.

Weaknesses

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