{
   "document": {
      "category": "csaf_security_advisory",
      "csaf_version": "2.0",
      "distribution": {
         "tlp": {
            "label": "WHITE",
            "url": "https://www.first.org/tlp/"
         }
      },
      "lang": "en",
      "notes": [
         {
            "category": "description",
            "text": "Business::GoCardless versions before 1.01 for Perl accept forged webhooks when a configured webhook secret is undef or empty.\n\nsignature_valid uses each configured secret as the HMAC key, and nothing rejects undef or an empty string, both of which Digest::SHA treats as an empty key. A secret read from an unset environment variable, or an empty entry in a list of rotated secrets, is used as is.\n\nA remote attacker can sign a forged webhook with an empty key and have it accepted as sent by GoCardless.",
            "title": "Vulnerability Description"
         }
      ],
      "publisher": {
         "category": "other",
         "contact_details": "gdt@cpan.org",
         "name": "giterlizzi",
         "namespace": "https://github.com/giterlizzi/"
      },
      "references": [
         {
            "category": "self",
            "summary": "CPANSA-Business-GoCardless-2026-119037 JSON",
            "url": "https://raw.githubusercontent.com/giterlizzi/perl-CPANSA-CSAF/develop/csaf/white/2026/cpansa-business-gocardless-2026-119037.json"
         },
         {
            "category": "external",
            "summary": "https://metacpan.org/release/LEEJO/Business-GoCardless-1.01/changes",
            "url": "https://metacpan.org/release/LEEJO/Business-GoCardless-1.01/changes"
         },
         {
            "category": "external",
            "summary": "CVE-2026-119037 (NVD)",
            "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-119037"
         }
      ],
      "title": "Business-GoCardless vulnerability",
      "tracking": {
         "current_release_date": "2026-10-30T00:00:00",
         "generator": {
            "engine": {
               "name": "CSAF Perl Toolkit",
               "version": "0.26"
            }
         },
         "id": "CPANSA-Business-GoCardless-2026-119037",
         "initial_release_date": "2026-10-30T00:00:00",
         "revision_history": [
            {
               "date": "2026-10-30T00:00:00",
               "number": "1",
               "summary": "First release"
            }
         ],
         "status": "final",
         "version": "1"
      }
   },
   "product_tree": {
      "branches": [
         {
            "branches": [
               {
                  "category": "product_version_range",
                  "name": "vers:cpan/<1.01",
                  "product": {
                     "name": "Business-GoCardless less than 1.01",
                     "product_id": "CSAFPID-0001",
                     "product_identification_helper": {
                        "purl": "pkg:cpan/Business-GoCardless"
                     }
                  }
               },
               {
                  "category": "product_version_range",
                  "name": "vers:cpan/>=1.01",
                  "product": {
                     "name": "Business-GoCardless greater than or equal 1.01",
                     "product_id": "CSAFPID-0002",
                     "product_identification_helper": {
                        "purl": "pkg:cpan/Business-GoCardless"
                     }
                  }
               }
            ],
            "category": "product_name",
            "name": "Business-GoCardless"
         }
      ]
   },
   "vulnerabilities": [
      {
         "cve": "CVE-2026-119037",
         "cwe": {
            "id": "CWE-347",
            "name": "Improper Verification of Cryptographic Signature"
         },
         "notes": [
            {
               "category": "description",
               "text": "Business::GoCardless versions before 1.01 for Perl accept forged webhooks when a configured webhook secret is undef or empty.\n\nsignature_valid uses each configured secret as the HMAC key, and nothing rejects undef or an empty string, both of which Digest::SHA treats as an empty key. A secret read from an unset environment variable, or an empty entry in a list of rotated secrets, is used as is.\n\nA remote attacker can sign a forged webhook with an empty key and have it accepted as sent by GoCardless.",
               "title": "Vulnerability Description"
            }
         ],
         "product_status": {
            "fixed": [
               "CSAFPID-0002"
            ],
            "known_affected": [
               "CSAFPID-0001"
            ]
         }
      }
   ]
}