CVE-2026-25711 is a vulnerability classified under CWE-613 (Insufficient Session Expiration) affecting all versions of Chargemap.com, a platform used to manage electric vehicle charging stations. The core issue lies in the WebSocket backend's session management mechanism, which uses charging station identifiers as unique session identifiers. However, the implementation permits multiple endpoints to connect simultaneously using the same session identifier, making these identifiers predictable. This design flaw enables session hijacking or shadowing attacks, where an attacker can establish a new connection using the same session ID, effectively displacing the legitimate charging station's connection. Consequently, the attacker can intercept or manipulate backend commands intended for the legitimate device. Additionally, the vulnerability allows an adversary to cause a denial-of-service (DoS) condition by flooding the backend with numerous valid session requests, overwhelming system resources. The vulnerability requires no privileges or user interaction, making it easier to exploit remotely over the network. The CVSS v3.1 base score is 7.3 (high), reflecting the network attack vector, low attack complexity, no privileges required, no user interaction, and impacts on confidentiality, integrity, and availability. No patches or known exploits are currently reported, but the vulnerability's nature demands urgent attention due to its potential to disrupt critical charging infrastructure operations.

The vulnerability can have severe consequences for organizations operating electric vehicle charging infrastructure using Chargemap.com. Session hijacking can lead to unauthorized control over charging stations, allowing attackers to manipulate charging sessions, potentially causing financial losses or safety hazards. Displacement of legitimate sessions can disrupt normal operations, leading to service interruptions and customer dissatisfaction. The ability to cause denial-of-service by overwhelming the backend with session requests can degrade or completely halt charging services, impacting large numbers of users and damaging the service provider's reputation. Given the increasing reliance on electric vehicle infrastructure, such disruptions could have cascading effects on transportation and energy sectors. Confidentiality is impacted as attackers may intercept sensitive commands; integrity is compromised through unauthorized command injection or manipulation; availability is threatened by DoS conditions. The lack of authentication and user interaction requirements lowers the barrier for exploitation, increasing the threat's severity and potential for widespread impact.

To mitigate CVE-2026-25711, Chargemap and affected organizations should implement the following specific measures: 1) Redesign session management to ensure session identifiers are unique, unpredictable, and bound to a single active connection, preventing multiple simultaneous connections with the same ID. 2) Implement strict session expiration and invalidation policies to prevent reuse of stale session identifiers. 3) Introduce authentication and authorization checks on WebSocket connections to verify the legitimacy of connecting endpoints before associating them with session IDs. 4) Employ rate limiting and connection throttling on the backend to mitigate denial-of-service attempts by limiting the number of session requests from a single source or within a time window. 5) Monitor WebSocket connection patterns and session anomalies to detect potential hijacking or shadowing attempts. 6) If possible, deploy Web Application Firewalls (WAFs) or Intrusion Detection Systems (IDS) tuned to detect suspicious WebSocket traffic patterns. 7) Coordinate with Chargemap for official patches or updates addressing this vulnerability and apply them promptly once available. 8) Educate operational staff on the risks and signs of session hijacking to enable rapid incident response. These targeted actions go beyond generic advice by focusing on the specific session management flaws and attack vectors described.