CVE-2026-119037

{
  "id": "CVE-2026-119037",
  "sourceIdentifier": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
  "published": "2026-10-30T13:18:32.670",
  "lastModified": "2026-10-30T13:18:32.670",
  "vulnStatus": "Received",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "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."
    }
  ],
  "affected": [
    {
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "collectionURL": "https://cpan.org/modules",
          "packageName": "Business-GoCardless",
          "modules": [
            "Business::GoCardless"
          ],
          "programFiles": [
            "lib/Business/GoCardless/Utils.pm"
          ],
          "programRoutines": [
            {
              "name": "Business::GoCardless::Utils::signature_valid"
            }
          ],
          "repo": "https://github.com/payprop/business-gocardless",
          "packageURL": "pkg:cpan/Business-GoCardless",
          "versions": [
            {
              "version": "0",
              "lessThan": "1.01",
              "versionType": "custom",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {},
  "weaknesses": [
    {
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-347"
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://metacpan.org/release/LEEJO/Business-GoCardless-1.01/changes",
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e"
    }
  ]
}