{
   "document": {
      "aggregate_severity": {
         "text": "medium"
      },
      "category": "csaf_security_advisory",
      "csaf_version": "2.0",
      "distribution": {
         "tlp": {
            "label": "WHITE",
            "url": "https://www.first.org/tlp/"
         }
      },
      "lang": "en",
      "notes": [
         {
            "category": "description",
            "text": "Punk versions from 0.48 before 0.55 for Perl route Extended CONNECT requests to any GET route without an Origin check in ps_serve_one.\n\nOn HTTP/2 and HTTP/3 a WebSocket handshake arrives as an Extended CONNECT, which is matched as a GET and so reaches every GET route, API operation and mount. The Origin check runs only when a websocket route matches. On this transport the handler's status is the handshake response, and a 2xx accepts it.\n\nA cross-origin page can open a WebSocket to any path and learn from its open or error event whether that path returns 2xx.",
            "title": "Vulnerability Description"
         }
      ],
      "publisher": {
         "category": "other",
         "contact_details": "gdt@cpan.org",
         "name": "giterlizzi",
         "namespace": "https://github.com/giterlizzi/"
      },
      "references": [
         {
            "category": "self",
            "summary": "CPANSA-Punk-2026-104380 JSON",
            "url": "https://raw.githubusercontent.com/giterlizzi/perl-CPANSA-CSAF/develop/csaf/white/2026/cpansa-punk-2026-104380.json"
         },
         {
            "category": "external",
            "summary": "https://metacpan.org/release/LNATION/Punk-0.55/changes",
            "url": "https://metacpan.org/release/LNATION/Punk-0.55/changes"
         },
         {
            "category": "external",
            "summary": "https://metacpan.org/release/LNATION/Punk-0.55/diff/LNATION/Punk-0.54",
            "url": "https://metacpan.org/release/LNATION/Punk-0.55/diff/LNATION/Punk-0.54"
         },
         {
            "category": "external",
            "summary": "http://www.openwall.com/lists/oss-security/2026/10/06/1",
            "url": "http://www.openwall.com/lists/oss-security/2026/10/06/1"
         },
         {
            "category": "external",
            "summary": "CVE-2026-104380 (NVD)",
            "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-104380"
         }
      ],
      "title": "Punk vulnerability",
      "tracking": {
         "current_release_date": "2026-10-06T00:00:00",
         "generator": {
            "engine": {
               "name": "CSAF Perl Toolkit",
               "version": "0.26"
            }
         },
         "id": "CPANSA-Punk-2026-104380",
         "initial_release_date": "2026-10-06T00:00:00",
         "revision_history": [
            {
               "date": "2026-10-06T00:00:00",
               "number": "1",
               "summary": "First release"
            }
         ],
         "status": "final",
         "version": "1"
      }
   },
   "product_tree": {
      "branches": [
         {
            "branches": [
               {
                  "category": "product_version_range",
                  "name": "vers:cpan/>=0.48|<0.55",
                  "product": {
                     "name": "Punk greater than or equal 0.48 and less than 0.55",
                     "product_id": "CSAFPID-0001",
                     "product_identification_helper": {
                        "purl": "pkg:cpan/Punk"
                     }
                  }
               },
               {
                  "category": "product_version_range",
                  "name": "vers:cpan/>=0.55",
                  "product": {
                     "name": "Punk greater than or equal 0.55",
                     "product_id": "CSAFPID-0002",
                     "product_identification_helper": {
                        "purl": "pkg:cpan/Punk"
                     }
                  }
               }
            ],
            "category": "product_name",
            "name": "Punk"
         }
      ]
   },
   "vulnerabilities": [
      {
         "cve": "CVE-2026-104380",
         "cwe": {
            "id": "CWE-1385",
            "name": "Missing Origin Validation in WebSockets"
         },
         "notes": [
            {
               "category": "description",
               "text": "Punk versions from 0.48 before 0.55 for Perl route Extended CONNECT requests to any GET route without an Origin check in ps_serve_one.\n\nOn HTTP/2 and HTTP/3 a WebSocket handshake arrives as an Extended CONNECT, which is matched as a GET and so reaches every GET route, API operation and mount. The Origin check runs only when a websocket route matches. On this transport the handler's status is the handshake response, and a 2xx accepts it.\n\nA cross-origin page can open a WebSocket to any path and learn from its open or error event whether that path returns 2xx.",
               "title": "Vulnerability Description"
            }
         ],
         "product_status": {
            "fixed": [
               "CSAFPID-0002"
            ],
            "known_affected": [
               "CSAFPID-0001"
            ]
         },
         "scores": [
            {
               "cvss_v3": {
                  "baseScore": 5.3,
                  "baseSeverity": "MEDIUM",
                  "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
                  "version": "3.1"
               },
               "products": [
                  "CSAFPID-0001"
               ]
            }
         ]
      }
   ]
}