CVE-2021-4226
CRITICALRSFirewall! < 1.1.25 - IP Address Spoofing via HTTP Header Manipulation
Title source: llmDescription
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.
References (1)
Core 1
Core References
Exploit, Third Party Advisory exploit
vdb-entry
technical-description
https://wpscan.com/vulnerability/c0ed80c8-ebbf-4ed9-b02f-31660097c352
Scores
CVSS v3
9.8
EPSS
0.0051
EPSS Percentile
39.2%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
yes
Technical Impact
total
Details
CWE
CWE-345
Status
published
Products (1)
rsjoomla/rsfirewall\!
< 1.1.25
Published
Dec 15, 2022
Tracked Since
Feb 18, 2026