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.RemoteAd…
Exact source revision recorded 1 Nov 2026 12:00:43 UTC. It does not establish the source's current position. Latest evidence.
euvd · EUVD-2026-58631
Publishedgo-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.
EUVD source date text has no stated timezone and is retained without inventing a UTC instant. Related bulletin membership is not an alias, common cause or applicability claim. A missing vector with a zero score is treated as unrated. Complete vendor/product and underlying source evidence remains in the original JSON.
Original publisher date fields
datePublished: Aug 14, 2026, 11:35:28 AM
dateUpdated: Oct 8, 2026, 3:24:31 PM
9 related source bulletins · separate from aliases
RHSA-2026:49732: Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update
CVE-2026-72815 · CVE-2026-72816 · CVE-2026-72817
msrc_CVE-2026-72816: go-chi chi before 5.3.0 IP Spoofing via RealIP Middleware
CVE-2026-72816
openSUSE-SU-2026:21670-1: Security update for cloudflared
CVE-2026-72815 · CVE-2026-72816 · CVE-2026-72817
openSUSE-SU-2026:21918-1: Security update for warewulf4
CVE-2026-34986 · CVE-2026-72815 · CVE-2026-72816 · CVE-2026-72817
openSUSE-SU-2026:21645-1: Security update for trivy
CVE-2026-72815 · CVE-2026-72816 · CVE-2026-72817
RHSA-2026:49718: Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update
CVE-2026-72815 · CVE-2026-72816 · CVE-2026-72817
RHSA-2026:54420: Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update
CVE-2026-72815 · CVE-2026-72816 · CVE-2026-72817
openSUSE-SU-2026:21653-1: Security update for v2ray-core
CVE-2026-27017 · CVE-2026-39821 · CVE-2026-72815 · CVE-2026-72816 · CVE-2026-72817
openSUSE-SU-2026:21793-1: Security update for hauler
CVE-2026-37236 · CVE-2026-41178 · CVE-2026-41888 · CVE-2026-72815 · CVE-2026-72816 · CVE-2026-72817
- Source published
- Aug 14, 2026, 11:35:28 AM (timezone not stated)
- Source modified
- Oct 8, 2026, 3:24:31 PM (timezone not stated)
- Observed here
- 1 Nov 2026 12:00:43 UTC
- Source terms
- ENISA EUVD · source terms and attribution apply
Original source record · Cite this exact observation · Complete original publisher JSON
This view projects the publisher's source fields for reading; the original JSON retains additional fields and CVE enrichment containers. Attribution: euvd · ENISA EUVD · source terms and attribution apply. Source text is retained; field grouping and change labels are provided by ChangeIntel.
EUVD CVSS 4.0 · 6.9 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