{
  "cveId": "CVE-2026-72816",
  "url": "https://patchblox.com/security/cve/CVE-2026-72816",
  "summary": "CVE-2026-72816 is fixed in 6 products on 1 platform, first by DEBIAN-CVE-2026-72816, released August 14, 2026. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "go-chi chi before 5.3.0 IP Spoofing via RealIP Middleware",
  "description": "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.",
  "published": "2026-08-14T12:16:44Z",
  "severity": "Moderate",
  "cvss": 6.5,
  "cwe": "Authentication Bypass by Spoofing",
  "epss": 0.003,
  "epssPercentile": 0.22931,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-72816",
  "fixes": [
    {
      "platform": "linux",
      "product": "cloudflared",
      "release": "opensuse-leap 16.0",
      "fixedVersion": "2026.8.2-bp160.1.1",
      "fix": "OPENSUSE-SU-2026:21670-1",
      "url": "https://patchblox.com/security/fix/linux/opensuse-su-2026-21670-1",
      "released": "2026-08-27T19:43:09Z"
    },
    {
      "platform": "linux",
      "product": "golang-github-go-chi-chi",
      "release": "Debian 14",
      "fixedVersion": "5.3.0-1",
      "fix": "DEBIAN-CVE-2026-72816",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-72816",
      "released": "2026-08-14T22:29:48Z"
    },
    {
      "platform": "linux",
      "product": "hauler",
      "release": "opensuse-leap 16.0",
      "fixedVersion": "2.1.0-bp160.1.1",
      "fix": "OPENSUSE-SU-2026:21793-1",
      "url": "https://patchblox.com/security/fix/linux/opensuse-su-2026-21793-1",
      "released": "2026-09-03T12:32:31Z"
    },
    {
      "platform": "linux",
      "product": "trivy",
      "release": "opensuse-leap 16.0",
      "fixedVersion": "0.74.0-160000.1.1",
      "fix": "OPENSUSE-SU-2026:21645-1",
      "url": "https://patchblox.com/security/fix/linux/opensuse-su-2026-21645-1",
      "released": "2026-08-25T07:22:37Z"
    },
    {
      "platform": "linux",
      "product": "v2ray-core",
      "release": "opensuse-leap 16.0",
      "fixedVersion": "5.53.0-bp160.1.1",
      "fix": "OPENSUSE-SU-2026:21653-1",
      "url": "https://patchblox.com/security/fix/linux/opensuse-su-2026-21653-1",
      "released": "2026-08-25T18:20:49Z"
    },
    {
      "platform": "linux",
      "product": "warewulf4",
      "release": "opensuse-leap 16.0",
      "fixedVersion": "4.7.1-bp160.1.1",
      "fix": "OPENSUSE-SU-2026:21918-1",
      "url": "https://patchblox.com/security/fix/linux/opensuse-su-2026-21918-1",
      "released": "2026-09-18T10:51:38Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-10T01:44:33Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}