CVE-2026-72816

go-chi/chi through 5.2.1 contains an IP spoofing vulnerability in the RealIP middleware (middleware/realip.go). The realIP() function reads client-controlled headers (True-Client-IP, X-Real-IP, and X-Forwarded-For) and overwrites r.RemoteAddr without verifying that the request originated from a trusted proxy. Attackers can supply arbitrary IP addresses in these headers to bypass IP-based access controls, evade rate limiting and geo-IP restrictions, and pollute audit logs. Fixed in 5.3.0.

CVSS v3 6.5 MEDIUM

6.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 3.9 / Impact : 2.5

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/go-chi/chi/security/advisories/GHSA-rjr7-jggh-pgcp
https://www.vulncheck.com/advisories/go-chi-chi-before-ip-spoofing-via-realip-middleware
https://github.com/go-chi/chi/security/advisories/GHSA-rjr7-jggh-pgcp

Configurations

No configuration.

History

No history.

Information

Published : 2026-08-14 12:16

Updated : 2026-09-09 20:35

NVD link : CVE-2026-72816

Mitre link : CVE-2026-72816

CVE.ORG link : CVE-2026-72816

JSON object : View

Products Affected

No product.

CWE

CWE-290

Authentication Bypass by Spoofing

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