How broadly exploitable is this vulnerability?

Exploitability depends primarily on how exposed the OCPP WebSocket endpoint is. If it is internet-facing or reachable over a wide network and station identifiers are predictable or discoverable, a large portion of the charging infrastructure can be impersonated remotely.

Does an attacker need valid user or admin credentials to exploit this?

No. By design, this flaw allows unauthenticated access: an attacker only needs network reachability to the WebSocket endpoint and the ability to guess or obtain one or more valid charger identifiers.

What is the safest general fix pattern?

The most robust pattern is to require strong, device-bound authentication for every charger connection, typically via mutual TLS or per-device credentials that are cryptographically tied to the station identity, and to reject any OCPP connection that does not successfully authenticate.

Severity:

CRITICAL RISK

(9.4)

Missing Authentication for OCPP WebSocket Endpoint (CWE-306) in EV Charging Backend

CVE-2026-20781

Published:

Feb 26, 2026

Status:

Modified

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

NDV

Recent Vulnerabilities

CWE-78

CRITICAL RISK

CRITICAL

(9.9)

Command Injection in MCP Stdio Configuration Validation (CWE-78) in WeKnora

Remote Code Execution

March 7, 2026

CWE-89

CRITICAL RISK

CRITICAL

(9.9)

SQL Injection via PostgreSQL Array/Row Expressions (CWE-89) in WeKnora Query Engine

Remote Code Execution via SQL Injection on the Database Server

March 7, 2026

Vulnerability Type

Category:

Missing Authentication

CWE:

CWE-306

Impact:

Unauthorized Access and Control of Charging Infrastructure

Severity:

CRITICAL RISK

(9.4)

CVSS Version:

3.1

Vulnerability Type

Category:

Missing Authentication

CWE:

CWE-306

Impact:

Unauthorized Access and Control of Charging Infrastructure

Severity:

CRITICAL RISK

(9.4)

CVSS Version:

3.1

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Ask AI for summary of CodeAnt

Missing Authentication for OCPP WebSocket Endpoint (CWE-306) in EV Charging Backend

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

Recent Vulnerabilities

CRITICAL RISK

CRITICAL

(9.9)

Command Injection in MCP Stdio Configuration Validation (CWE-78) in WeKnora

CRITICAL RISK

CRITICAL

(9.9)

SQL Injection via PostgreSQL Array/Row Expressions (CWE-89) in WeKnora Query Engine

Vulnerability Type

Vulnerability Type

Vulnerability Type

Catch This CVE While Code Is Being Written

Ship clean & secure code faster

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