go-chi/chi versions 0.9.0 before 5.3.0 contains an IP spoofing vulnerability in the RealIP middleware, which resolves the request source IP (Request.RemoteAddr) using the first IP in the X-Forwarded-For header without validating trusted proxies. A malicious client can prepend a forged IP as the first value of the X-Forwarded-For header to spoof the request source IP, potentially bypassing access controls or falsifying request logs.
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History
Fri, 14 Aug 2026 11:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | go-chi/chi versions 0.9.0 before 5.3.0 contains an IP spoofing vulnerability in the RealIP middleware, which resolves the request source IP (Request.RemoteAddr) using the first IP in the X-Forwarded-For header without validating trusted proxies. A malicious client can prepend a forged IP as the first value of the X-Forwarded-For header to spoof the request source IP, potentially bypassing access controls or falsifying request logs. | |
| Title | go-chi chi 0.9.0 before 5.3.0 IP Spoofing via X-Forwarded-For | |
| Weaknesses | CWE-345 | |
| References |
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| Metrics |
cvssV3_1
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MITRE
Status: PUBLISHED
Assigner: VulnCheck
Published:
Updated: 2026-08-14T11:35:28.824Z
Reserved: 2026-08-10T15:12:16.754Z
Link: CVE-2026-72817
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Weaknesses