{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "last_affected": "5.4.1.7"
              },
              {
                "fixed": "5.4.1.7"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "DESCRIPTION"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "a2843d5b1e037f8b61cc99f27eab52a28bf41dfd"
            }
          ],
          "repo": "https://github.com/skipperbent/simple-php-router",
          "type": "GIT"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
      "CWE-348"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/103xxx/CVE-2026-103592.json"
  },
  "details": "simple-php-router through 5.4.1.7 contains an IP restriction bypass vulnerability in the IpRestrictAccess middleware that allows remote unauthenticated attackers to bypass IP whitelist and blacklist protections. Attackers can spoof X-Forwarded-For, CF-Connecting-IP, or Client-IP headers to impersonate whitelisted addresses or evade blacklists, gaining access to IP-restricted routes.",
  "id": "CVE-2026-103592",
  "modified": "2026-10-02T03:30:31.688733306Z",
  "published": "2026-09-30T23:02:36.416Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/103xxx/CVE-2026-103592.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-103592"
    },
    {
      "type": "ADVISORY",
      "url": "https://www.vulncheck.com/advisories/simple-php-router-through-5.4.1.7-ip-restriction-bypass-via-forwarding-headers"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/skipperbent/simple-php-router/issues/727"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/skipperbent/simple-php-router"
    },
    {
      "type": "ARTICLE",
      "url": "https://github.com/skipperbent/simple-php-router/blob/5.4.1.7/src/Pecee/Http/Middleware/IpRestrictAccess.php"
    },
    {
      "type": "ARTICLE",
      "url": "https://github.com/skipperbent/simple-php-router/blob/5.4.1.7/src/Pecee/Http/Request.php"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "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",
      "type": "CVSS_V4"
    }
  ],
  "summary": "simple-php-router through 5.4.1.7 IP restriction bypass via forwarding headers"
}