Description
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.
Problem types
CWE-306 Missing Authentication for Critical Function
Product status
All versions
Credits
Khaled Sarieddine and Mohammad Ali Sayed reported this vulnerability to CISA.
References
www.cisa.gov/news-events/ics-advisories/icsa-26-057-06
github.com/...p/csaf_files/OT/white/2026/icsa-26-057-06.json