{
   "document": {
      "aggregate_severity": {
         "text": "high"
      },
      "category": "csaf_security_advisory",
      "csaf_version": "2.0",
      "distribution": {
         "tlp": {
            "label": "WHITE",
            "url": "https://www.first.org/tlp/"
         }
      },
      "lang": "en",
      "notes": [
         {
            "category": "description",
            "text": "Dancer2 versions from 2.1.0 before 2.2.0 for Perl serve files from outside public_dir via relative path segments in the File route handler.\n\nThe handler joins the request path onto public_dir without collapsing relative segments, and checks only that the result is a readable regular file. A request for `/../outside.txt` escapes public_dir, and percent-encoding the dots reaches the same file.\n\nThe handler is off by default. An application is affected once it names File in route_handlers and sets static_handler to 0, which otherwise refuses a dot segment before the route runs.\n\nAny file the worker process can read is served to an unauthenticated request, including the application's config.yml above public_dir.",
            "title": "Vulnerability Description"
         }
      ],
      "publisher": {
         "category": "other",
         "contact_details": "gdt@cpan.org",
         "name": "giterlizzi",
         "namespace": "https://github.com/giterlizzi/"
      },
      "references": [
         {
            "category": "self",
            "summary": "CPANSA-Dancer2-2026-93712 JSON",
            "url": "https://raw.githubusercontent.com/giterlizzi/perl-CPANSA-CSAF/develop/csaf/white/2026/cpansa-dancer2-2026-93712.json"
         },
         {
            "category": "external",
            "summary": "https://github.com/PerlDancer/Dancer2/commit/2446a09ffb83fef71cc75c327bd6e4b1f007b885.patch",
            "url": "https://github.com/PerlDancer/Dancer2/commit/2446a09ffb83fef71cc75c327bd6e4b1f007b885.patch"
         },
         {
            "category": "external",
            "summary": "https://github.com/PerlDancer/Dancer2/security/advisories/GHSA-6xw8-v24c-m783",
            "url": "https://github.com/PerlDancer/Dancer2/security/advisories/GHSA-6xw8-v24c-m783"
         },
         {
            "category": "external",
            "summary": "https://metacpan.org/release/CROMEDOME/Dancer2-2.2.0/changes",
            "url": "https://metacpan.org/release/CROMEDOME/Dancer2-2.2.0/changes"
         },
         {
            "category": "external",
            "summary": "http://www.openwall.com/lists/oss-security/2026/09/22/4",
            "url": "http://www.openwall.com/lists/oss-security/2026/09/22/4"
         },
         {
            "category": "external",
            "summary": "CVE-2026-93712 (NVD)",
            "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-93712"
         }
      ],
      "title": "Dancer2 vulnerability",
      "tracking": {
         "current_release_date": "2026-09-22T00:00:00",
         "generator": {
            "engine": {
               "name": "CSAF Perl Toolkit",
               "version": "0.26"
            }
         },
         "id": "CPANSA-Dancer2-2026-93712",
         "initial_release_date": "2026-09-22T00:00:00",
         "revision_history": [
            {
               "date": "2026-09-22T00:00:00",
               "number": "1",
               "summary": "First release"
            }
         ],
         "status": "final",
         "version": "1"
      }
   },
   "product_tree": {
      "branches": [
         {
            "branches": [
               {
                  "category": "product_version_range",
                  "name": "vers:cpan/>=2.1.0|<2.2.0",
                  "product": {
                     "name": "Dancer2 greater than or equal 2.1.0 and less than 2.2.0",
                     "product_id": "CSAFPID-0001",
                     "product_identification_helper": {
                        "purl": "pkg:cpan/Dancer2"
                     }
                  }
               },
               {
                  "category": "product_version_range",
                  "name": "vers:cpan/>=2.2.0",
                  "product": {
                     "name": "Dancer2 greater than or equal 2.2.0",
                     "product_id": "CSAFPID-0002",
                     "product_identification_helper": {
                        "purl": "pkg:cpan/Dancer2"
                     }
                  }
               }
            ],
            "category": "product_name",
            "name": "Dancer2"
         }
      ]
   },
   "vulnerabilities": [
      {
         "cve": "CVE-2026-93712",
         "cwe": {
            "id": "CWE-22",
            "name": "Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')"
         },
         "notes": [
            {
               "category": "description",
               "text": "Dancer2 versions from 2.1.0 before 2.2.0 for Perl serve files from outside public_dir via relative path segments in the File route handler.\n\nThe handler joins the request path onto public_dir without collapsing relative segments, and checks only that the result is a readable regular file. A request for `/../outside.txt` escapes public_dir, and percent-encoding the dots reaches the same file.\n\nThe handler is off by default. An application is affected once it names File in route_handlers and sets static_handler to 0, which otherwise refuses a dot segment before the route runs.\n\nAny file the worker process can read is served to an unauthenticated request, including the application's config.yml above public_dir.",
               "title": "Vulnerability Description"
            }
         ],
         "product_status": {
            "fixed": [
               "CSAFPID-0002"
            ],
            "known_affected": [
               "CSAFPID-0001"
            ]
         },
         "scores": [
            {
               "cvss_v3": {
                  "baseScore": 7.5,
                  "baseSeverity": "HIGH",
                  "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
                  "version": "3.1"
               },
               "products": [
                  "CSAFPID-0001"
               ]
            }
         ]
      }
   ]
}