Unauthenticated login restriction bypass via spoofed headers
Published Nov 21, 2022 · Updated Apr 30, 2025
Authorization bypass in Login Block IPs 1.0.0 and earlier allows remote attackers to bypass IP-based login restrictions via crafted HTTP headers. The check_is_login_page() function accepts the HTTP_CLIENT_IP header as the client address without restricting trusted sources, so an attacker can present an allowed address. The attack requires network access to the WordPress login endpoint and can defeat the plugin’s configured IP gate, enabling access to the normal login flow.
Summary
What happened
Authorization bypass in Login Block IPs 1.0.0 and earlier allows remote attackers to bypass IP-based login restrictions via crafted HTTP headers. The check_is_login_page() function accepts the HTTP_CLIENT_IP header as the client address without restricting trusted sources, so an attacker can present an allowed address. The attack requires network access to the WordPress login endpoint and can defeat the plugin’s configured IP gate, enabling access to the normal login flow.
The record
- CVE
- CVE-2022-1579
- Published
- Nov 21, 2022
- Updated
- Apr 30, 2025
- Vendor
- Gunka Studios
- Product
- Login Block IPs
- Classifications
- CWE-639, T1190
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Nov 21, 2022CVE publishedPublication date reported by the CVE source.
- Apr 30, 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?
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- Affected versionversion=0 <=1.0.0
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
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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