Security advisory

{
  "id": "0cf9229f30e08ee8c2d46f58db52765a7bf4309133c023e481a50d14423dd82f",
  "url": "https://osv.dev/vulnerability/CVE-2023-49955",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2023-49955",
    "summary": "An issue was discovered in Dalmann OCPP.Core before 1.2.0 for OCPP (Open Charge Point Protocol) for electric vehicles. It does not validate the length of the chargePointVendor field in a BootNotification message, potentially leading to server instability and a denial of service when processing excessively large inputs. NOTE: the vendor's perspective is \"OCPP.Core is intended for use in a protected environment/network.\"",
    "evidence": "osv:CVE-2023-49955",
    "products": [],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2023-49955",
      "aliases": [
        "CVE-2023-49955"
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/dallmann-consulting/ocpp.core",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "7d1d59090aa895043b28f0c5b14212c3e69a39cf"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "1.2.0"
                      }
                    ],
                    "source": "DESCRIPTION"
                  },
                  {
                    "cpe": "cpe:2.3:a:dallmann-consulting:open_charge_point_protocol:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "1.2.0"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "V1.1.0",
            "0.1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-49955.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:28.329110076Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/49xxx/CVE-2023-49955.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2023-49955",
        "https://github.com/dallmann-consulting/OCPP.Core/issues/32"
      ],
      "provider_metadata": {
        "cna_assigner": "mitre",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/49xxx/CVE-2023-49955.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2023-49955",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 494711,
  "published_at": "2023-12-07T00:00:00+00:00"
}