CVE-2026-20781

Summary

WebSocket endpoints lack proper authentication mechanisms, enabling attackers to perform unauthorized station impersonation and manipulate data sent to the backend. An unauthenticated attacker can connect to the OCPP WebSocket endpoint using a known or discovered charging station identifier, then issue or receive OCPP commands as a legitimate charger. Given that no authentication is required, this can lead to privilege escalation, unauthorized control of charging infrastructure, and corruption of charging network data reported to the backend.

Affected Software

VendorProductVersion RangeStatus
CloudChargecloudcharge.seAll versionsaffected

Weaknesses

  • CWE-306: CWE-306 Missing Authentication for Critical Function

Workarounds

CloudCharge did not respond to CISA's request for coordination. Contact CloudCharge using their contact page here: https://cloudcharge.tech/support/contact/ for more information.

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: yes
    • Technical Impact: total

References