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Highest advisory severityMedium 1 vendor · 1 advisory

CVE-2026-72816

CVE-2026-72816: 1 tracked advisory record across Red Hat. Compare vendor sources and published fix guidance.

Compare the source-linked records below. Ratings and product/version details belong to each advisory; they are not a single CVE-wide score or proof that every listed product is affected. How VulniPulse collects and checks evidence.

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Vendor advisory comparison

Red Hat

1 advisory
  • Advisory severityMedium6.5

    Medium [CVE-2026-72816] IP Spoofing via RealIP Middleware allows bypassing access controls

    CVE-2026-72816Source published Source updated

    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. This vulnerability allows a remote attacker to perform IP spoofing by supplying arbitrary IP addresses in client-controlled headers. Red Hat severity: Moderate — CVSS 6.5 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N). Weakness: CWE-346.

    Affected products in this advisory
    • Red Hat Hardened Images
    • Cryostat 4
    • External Secrets Operator for Red Hat OpenShift
    • Gatekeeper 3

    18 more entries in the full advisory.

    Source-reported affected versions
    • 5.2.1
    Source-reported fixed versions
    • 5.3.0
    • spire1-14-main-1.14.7-0.4.hum1
    • spire1-15-main-1.15.2-0.4.hum1
    • cosign-main-3.1.3-0.1.hum1

    3 more entries in the full advisory.

    Mitigation guidance
    • Do not use the `chi/middleware.RealIP` middleware when receiving traffic directly from untrusted networks or unverified proxies. Instead, strip or sanitize client-supplied forwarding headers at an upstream edge proxy or reverse proxy (such as NGINX or HAProxy) before requests reach the application.
    Full advisory and evidenceOpen source bulletin

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