CloudCharge cloudcharge.se में महत्वपूर्ण फ़ंक्शन के लिए प्रमाणीकरण की कमी

The core of this vulnerability lies in the absence of authentication for OCPP (Open Charge Point Protocol) WebSocket connections. An attacker can connect to the CloudCharge system using a known or discovered charging station identifier. Because no authentication is required, they can then issue OCPP commands as if they were a legitimate charging station. This allows for complete impersonation, enabling attackers to manipulate charging sessions, alter reported data, and potentially disrupt the entire charging network. The blast radius extends to the backend systems that rely on the data reported by CloudCharge, potentially impacting billing, energy management, and grid stability. This vulnerability shares similarities with other protocol-based attacks where authentication is bypassed, leading to unauthorized control.

Organizations deploying CloudCharge for managing electric vehicle charging infrastructure are at significant risk. This includes businesses operating charging stations, energy providers, and grid operators. Legacy CloudCharge deployments with outdated configurations are particularly vulnerable, as are environments where network segmentation is inadequate, allowing external access to the OCPP WebSocket endpoint.

• linux / server:

journalctl -u cloudcharge -f | grep -i "ocpp"

• generic web:

curl -v https://<cloudcharge_ip>:9000/ocpp | grep -i "websocket"

• generic web:

curl -I https://<cloudcharge_ip>:9000/ocpp

• linux / server:

lsof -i :9000

1. 2026-02-26Disclosure

   disclosure

1. आरक्षित2026-02-24
2. प्रकाशित2026-02-26
3. संशोधित2026-03-05
4. EPSS अद्यतन2026-03-23

The primary mitigation for CVE-2026-20781 is to upgrade to a patched version of CloudCharge as soon as it becomes available. Until a patch is deployed, implement temporary workarounds to reduce the attack surface. A Web Application Firewall (WAF) or proxy can be configured to restrict access to the OCPP WebSocket endpoint (typically on port 9000) to only trusted sources. Implement strict IP address filtering or authentication mechanisms at the WAF level. Additionally, monitor OCPP traffic for suspicious activity, such as unexpected commands or data patterns. Consider implementing rate limiting on the WebSocket endpoint to prevent brute-force attempts to discover valid charging station identifiers. After implementing WAF rules, verify their effectiveness by attempting to connect to the OCPP endpoint without proper authentication.