IP restriction bypass via trusted forwarding headers
Published Sep 25, 2023 · Updated Apr 23, 2025
IP address spoofing in WPDO DoLogin Security before 3.7 allows remote attackers to bypass IP-based login restrictions using HTTP headers. The request IP lookup accepts attacker-supplied X-Forwarded-For values and records them in the Login Attempts Log without restricting trust to known proxies. No authentication is required; a forged address can evade a blocked-IP rule and falsify the audit trail, while no broader access is established.
Summary
What happened
IP address spoofing in WPDO DoLogin Security before 3.7 allows remote attackers to bypass IP-based login restrictions using HTTP headers. The request IP lookup accepts attacker-supplied X-Forwarded-For values and records them in the Login Attempts Log without restricting trust to known proxies. No authentication is required; a forged address can evade a blocked-IP rule and falsify the audit trail, while no broader access is established.
The record
- CVE
- CVE-2023-4631
- Published
- Sep 25, 2023
- Updated
- Apr 23, 2025
- Vendor
- WPDO
- Product
- DoLogin Security
- Classifications
- CWE-290
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Sep 25, 2023CVE publishedPublication date reported by the CVE source.
- Apr 23, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=0 <3.7
What conditions does exploitation require?
What is affected?
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
- WPScan forged X-Forwarded-For proof of conceptproof of concept · demonstrated
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
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Your stack
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