{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "cpe": "cpe:2.3:a:sangoma:freepbx:*:*:*:*:*:*:*:*",
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "17.0.9"
              }
            ],
            "source": "CPE_RANGE"
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3eec6e4780513e38d1b679f093e1a85989a29a43"
            }
          ],
          "repo": "https://github.com/freepbx/core",
          "type": "GIT"
        }
      ]
    },
    {
      "ranges": [
        {
          "database_specific": {
            "cpe": "cpe:2.3:a:sangoma:freepbx:*:*:*:*:*:*:*:*",
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "17.0.9"
              }
            ],
            "source": "CPE_RANGE"
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "d9c9a1bd4d5627e932c6adb7ca2ee1100dfc34aa"
            }
          ],
          "repo": "https://github.com/freepbx/framework",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-37j8-fhxx-9vhp"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-862"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/73xxx/CVE-2026-73665.json",
    "unresolved_ranges": [
      {
        "extracted_events": [
          {
            "fixed": "17.0.9"
          }
        ],
        "source": "AFFECTED_FIELD"
      }
    ]
  },
  "details": "FreePBX is an open source IP PBX. Prior to 17.0.9, the UCP Node server on ports 8001 and 8003 uses io.use(checkAuth) in node/lib/server.js, but Socket.IO version 4 applies that middleware only to the default namespace. An unauthenticated client can connect to custom namespaces that do not consistently invoke checkAuth in node/lib/auth.js and send crafted event values containing carriage-return or newline characters through the Asterisk Manager Interface action path patched by node/lib/asterisk-manager-patch.js, allowing arbitrary commands to execute as the asterisk service user. This issue is fixed in version 17.0.9.",
  "id": "CVE-2026-73665",
  "modified": "2026-10-11T02:30:57.020525268Z",
  "published": "2026-08-13T21:32:02.059Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/73xxx/CVE-2026-73665.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/FreePBX/security-reporting/security/advisories/GHSA-37j8-fhxx-9vhp"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-73665"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "FreePBX UCP: Unauthenticated remote code execution via socket.io namespace auth bypass and AMI action injection"
}