go-chi chi v5.2.1 IP Spoofing via X-Forwarded-For Header
33Vexday Risk Score
No sign of exploitation. It has a public proof of concept.
ssvc Attendcvss 6.9epss 0.4%
from disclosure to weapon27 days
Published on NVDAug 14
1st PoC+27d
exploitation probability
0.4%top 66% of all CVEs
observed exploitation
nono source reports it
1 public exploit(s)
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.
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
Affected products
go-chi · chipublic PoCs found — 1
githubgithub.com/Saku0512/CVE-2026-72815-poc★ 0⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.