CVE-2026-72815 — go-chi chi v5.2.1 IP Spoofing via X-Forwarded-For Header
go-chi chi versions >= 5.2.1 and before 5.3.0 contain an IP spoofing vulnerability in the RealIP middleware, which blindly trusts the first (leftmost) value of the X-Forwarded-F…
Published: 2026-08-14 · CVSS: 6.9 · CVSS 4.0
go-chi chi versions >= 5.2.1 and before 5.3.0 contain an IP spoofing vulnerability in the RealIP middleware, which blindly trusts the first (leftmost) value of the X-Forwarded-For HTTP header. A remote attacker can bypass IP-based access control lists and rate-limiting mechanisms, and forge log entries, by supplying a spoofed IP address in the X-Forwarded-For header. The issue is fixed in version 5.3.0.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7