CVE-2026-72817
go-chi chi 0.9.0 before 5.3.0 IP Spoofing via X-Forwarded-For
CVSS Score
6.5
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-345 |
| Vendor | go-chi |
| Product | chi |
| Published | Aug 14, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
None
Affected Versions
go-chi / chi
0.9.0 < 5.3.0
References
Credits
🔍 convto