{"id":"CVE-2023-49955","aliases":["EUVD-2023-53850","GHSA-r83w-76v6-vh75"],"status":"published","title":"An issue was discovered in Dalmann OCPP.Core before 1.2.0 for OCPP (Open Charge Point Protocol)...","description":"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.\"","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-10","score":0.00707,"percentile":0.53772,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"published":"2023-12-07T00:00:00Z","modified":"2026-10-28T02:30:28Z","products":[{"vendor":"dallmann-consulting","product":"open_charge_point_protocol"}],"references":[{"url":"https://github.com/dallmann-consulting/OCPP.Core/issues/32","tags":["x_transferred","Exploit","Issue Tracking","Vendor Advisory","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-49955","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-r83w-76v6-vh75"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/49xxx/CVE-2023-49955.json","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2023-49955","description":"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.\"","status":"published","published":"2023-12-07T00:00:00Z","modified":"2024-08-02T22:09:49.421Z","updated_at":"2026-11-02T14:35:12.998024Z"}],"euvd":[{"id":"EUVD-2023-53850","description":"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.\"","status":"published","published":"2023-12-07T00:00:00Z","modified":"2024-08-02T22:09:49Z","updated_at":"2026-11-03T03:49:55.731961Z"}],"ghsa":[{"id":"GHSA-r83w-76v6-vh75","title":"An issue was discovered in Dalmann OCPP.Core before 1.2.0 for OCPP (Open Charge Point Protocol)...","description":"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.\"","status":"published","published":"2023-12-07T15:30:38Z","modified":"2023-12-13T15:30:55Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T14:55:11.44614Z"}],"nvd":[{"id":"CVE-2023-49955","description":"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.\"","status":"published","published":"2023-12-07T13:15:07.69Z","modified":"2026-06-17T06:36:46.28Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary"}],"updated_at":"2026-11-02T14:08:54.010507Z"}],"osv":[{"id":"CVE-2023-49955","description":"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.\"","status":"published","published":"2023-12-07T00:00:00Z","modified":"2026-10-28T02:30:28.329110076Z","updated_at":"2026-11-02T15:44:34.72355Z"}]}}