CVE-2026-27777: Charging Station Information Disclosure

CVE-2026-27777 Overview

CVE-2026-27777 is a medium-severity vulnerability affecting electric vehicle (EV) charging station infrastructure. The vulnerability involves charging station authentication identifiers being publicly accessible via web-based mapping platforms, representing a significant information disclosure risk in Industrial Control Systems (ICS) environments.

This vulnerability is classified under CWE-522 (Insufficiently Protected Credentials), indicating that sensitive authentication data is exposed without adequate protection mechanisms. Attackers could leverage this exposed information to conduct unauthorized access attempts, impersonation attacks, or reconnaissance activities targeting EV charging infrastructure.

Critical Impact

Publicly exposed authentication identifiers for EV charging stations could enable unauthorized access, service manipulation, or targeted attacks against critical transportation infrastructure.

Affected Products

• EV Charging Station Management Systems
• Web-based Mapping Platforms with Charging Station Data
• Mobiliti eMobility Infrastructure

Discovery Timeline

• 2026-03-06 - CVE CVE-2026-27777 published to NVD
• 2026-03-12 - Last updated in NVD database

Technical Details for CVE-2026-27777

Vulnerability Analysis

This vulnerability represents an information disclosure flaw where authentication identifiers for EV charging stations are inadvertently exposed through publicly accessible web-based mapping platforms. The root cause stems from insufficient protection of credential data (CWE-522), where sensitive authentication tokens or identifiers that should remain confidential are instead visible to unauthorized parties.

The exposure of these identifiers creates multiple attack scenarios. Adversaries could collect the exposed authentication data to build a comprehensive database of charging station credentials. This information could then be used for direct authentication attempts, social engineering campaigns targeting charging station operators, or as part of a larger reconnaissance effort against critical infrastructure.

The network-accessible nature of this vulnerability means that attackers do not require local access or special privileges to obtain the exposed information. Any user with access to the affected mapping platforms could potentially harvest these authentication identifiers at scale.

Root Cause

The vulnerability stems from CWE-522 (Insufficiently Protected Credentials), indicating that charging station authentication identifiers are stored or transmitted in a manner that makes them accessible to unauthorized actors. This typically occurs when sensitive authentication data is embedded in publicly accessible APIs, map data feeds, or front-end web application code without proper access controls or obfuscation.

Attack Vector

The attack vector is network-based, requiring no authentication or user interaction. An attacker can access the vulnerable mapping platforms remotely and extract charging station authentication identifiers. The exposed data could be harvested through:

• Direct access to public mapping platform interfaces
• API enumeration of charging station data endpoints
• Web scraping of publicly visible station information pages
• Interception of unprotected data feeds to mapping services

The low attack complexity combined with no required privileges makes this vulnerability particularly accessible to threat actors with minimal technical expertise.

Detection Methods for CVE-2026-27777

Indicators of Compromise

• Unusual patterns of API requests targeting charging station data endpoints
• Automated scraping attempts against mapping platform resources
• Bulk queries for charging station authentication identifiers from suspicious IP addresses
• Unexpected access patterns to charging station management interfaces using exposed credentials

Detection Strategies

• Monitor web server logs for automated crawling behavior targeting station identifier endpoints
• Implement rate limiting and alerting on excessive queries for charging station data
• Deploy web application firewalls (WAF) to detect and block scraping attempts
• Audit authentication logs for access attempts using publicly visible identifiers

Monitoring Recommendations

• Enable comprehensive logging for all charging station authentication events
• Configure alerts for authentication attempts from geographically anomalous locations
• Monitor for credential stuffing patterns using exposed identifier formats
• Track changes to publicly accessible mapping platform data for unauthorized modifications

How to Mitigate CVE-2026-27777

Immediate Actions Required

• Audit all public-facing mapping platform integrations for exposed authentication data
• Remove or obfuscate authentication identifiers from publicly accessible data feeds
• Implement access controls on charging station data APIs
• Rotate any potentially compromised authentication credentials
• Review and restrict data sharing agreements with mapping platform providers

Patch Information

Organizations should consult the CISA ICS Advisory ICSA-26-062-06 for official guidance and remediation steps. Additional technical details are available in the GitHub CSAF Resource. Affected Mobiliti customers should contact support through the Mobiliti User Support Page for specific remediation assistance.

Workarounds

• Implement API authentication and authorization for all charging station data endpoints
• Configure network segmentation to isolate charging infrastructure management systems
• Deploy monitoring solutions to detect unauthorized access to station identifiers
• Establish data minimization policies to limit sensitive information in public-facing systems
• Enable multi-factor authentication for charging station administrative access

# Example: Restrict access to charging station API endpoints via nginx
location /api/stations/ {
    # Require authentication for station data access
    auth_basic "Restricted Access";
    auth_basic_user_file /etc/nginx/.htpasswd;
    
    # Rate limit to prevent bulk harvesting
    limit_req zone=station_api burst=10 nodelay;
    
    # Log all access attempts
    access_log /var/log/nginx/station_api_access.log;
}