Rate-limit bypass via trusted client IP headers
Published Mar 13, 2026 · Updated Mar 13, 2026
IP address spoofing in gVectors Team wpDiscuz before 7.6.47 allows remote attackers to bypass IP-based rate limits and bans. The getIP() function treats attacker-controlled HTTP_CLIENT_IP and HTTP_X_FORWARDED_FOR values as the requester's address instead of relying on a trusted network source. No authentication is required; forged headers let abusive requests evade controls keyed to the recorded client IP.
Summary
What happened
IP address spoofing in gVectors Team wpDiscuz before 7.6.47 allows remote attackers to bypass IP-based rate limits and bans. The getIP() function treats attacker-controlled HTTP_CLIENT_IP and HTTP_X_FORWARDED_FOR values as the requester's address instead of relying on a trusted network source. No authentication is required; forged headers let abusive requests evade controls keyed to the recorded client IP.
The record
- CVE
- CVE-2026-22201
- Published
- Mar 13, 2026
- Updated
- Mar 13, 2026
- Vendor
- AdvancedCoding
- Product
- wpDiscuz
- Classifications
- CWE-348
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Mar 13, 2026CVE publishedPublication date reported by the CVE source.
- Mar 13, 2026Record 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 <7.6.47
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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