CVE-2026-20733 Overview
CVE-2026-20733 is an information disclosure vulnerability affecting CloudCharge's cloudcharge.se platform. Charging station authentication identifiers are publicly accessible via web-based mapping platforms, exposing sensitive credential information that could be leveraged by attackers to compromise electric vehicle (EV) charging infrastructure.
This vulnerability is classified as CWE-522 (Insufficiently Protected Credentials), indicating that authentication credentials are stored or transmitted in a manner that allows unauthorized access. The exposure of these identifiers through publicly accessible mapping services creates a significant attack surface for malicious actors targeting EV charging networks.
Critical Impact
Exposed authentication identifiers could enable unauthorized access to charging station management systems, potentially allowing attackers to manipulate charging sessions, access billing information, or disrupt charging infrastructure operations.
Affected Products
- CloudCharge cloudcharge.se (all versions)
Discovery Timeline
- 2026-02-27 - CVE-2026-20733 published to NVD
- 2026-03-05 - Last updated in NVD database
Technical Details for CVE-2026-20733
Vulnerability Analysis
This vulnerability stems from improper credential protection in the CloudCharge platform. Authentication identifiers used for charging station management are inadvertently exposed through public web-based mapping interfaces. This design flaw allows anyone with access to these mapping platforms to enumerate and collect authentication credentials without requiring any special privileges or technical expertise.
The network-accessible nature of this vulnerability means attackers can remotely harvest credentials without physical access to the charging stations. Once obtained, these identifiers could potentially be used to authenticate to charging station management systems, enabling various attack scenarios against the EV charging infrastructure.
Root Cause
The root cause is classified as CWE-522 (Insufficiently Protected Credentials). The CloudCharge platform fails to adequately protect authentication identifiers, allowing them to be exposed through publicly accessible mapping interfaces. This represents a fundamental design flaw where sensitive authentication data is not properly isolated from public-facing components of the system.
Attack Vector
The attack vector is network-based, requiring no authentication or user interaction. An attacker can exploit this vulnerability by:
- Accessing publicly available web-based mapping platforms that display CloudCharge charging station information
- Enumerating exposed authentication identifiers associated with charging stations
- Collecting these credentials for potential use in subsequent attacks against charging infrastructure
- Potentially using harvested credentials to access charging station management interfaces or APIs
The vulnerability does not require any special privileges, making it accessible to any attacker with network connectivity to the affected mapping platforms.
Detection Methods for CVE-2026-20733
Indicators of Compromise
- Unusual queries or enumeration patterns against mapping platform APIs targeting charging station data
- Unexpected authentication attempts to charging station management systems using previously exposed credentials
- Anomalous access patterns to charging station administrative interfaces from unfamiliar IP addresses
Detection Strategies
- Monitor for bulk data extraction attempts from mapping platforms containing charging station information
- Implement logging and alerting for authentication attempts using credentials associated with publicly mapped stations
- Review access logs for charging station management systems for unauthorized access attempts
- Deploy network monitoring to detect reconnaissance activity targeting CloudCharge infrastructure
Monitoring Recommendations
- Enable comprehensive logging on all charging station management interfaces
- Implement rate limiting and anomaly detection on APIs that expose station information
- Monitor for credential stuffing attacks using harvested authentication identifiers
- Establish baseline behavior patterns for legitimate charging station access and alert on deviations
How to Mitigate CVE-2026-20733
Immediate Actions Required
- Audit all publicly accessible mapping integrations to identify exposed authentication identifiers
- Rotate all authentication credentials that may have been exposed through public platforms
- Disable or restrict public access to mapping interfaces until proper credential protection is implemented
- Contact CloudCharge support for guidance on securing affected deployments
Patch Information
Organizations should consult the CISA ICS Advisory ICSA-26-057-03 for official mitigation guidance. Additionally, affected organizations can reach out to CloudCharge Support for vendor-specific remediation steps and updates.
The CSAF advisory document provides machine-readable vulnerability details that can be used for automated vulnerability management workflows.
Workarounds
- Implement network segmentation to isolate charging station management systems from public-facing components
- Deploy additional authentication layers (multi-factor authentication) for charging station administrative access
- Remove or obfuscate sensitive authentication identifiers from publicly accessible mapping integrations
- Implement IP allowlisting for charging station management interfaces where feasible
- Monitor and restrict API access to prevent bulk enumeration of station information
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
