CVE-2026-20748
HighSummary
The WebSocket backend uses charging station identifiers to uniquely associate sessions but allows multiple endpoints to connect using the same session identifier. This leads to predictable session identifiers, enabling session hijacking or shadowing.
Risk Assessment
This vulnerability may allow unauthorized users to authenticate as other users or enable a malicious actor to cause a denial-of-service condition by overwhelming the backend with valid session requests.
Recommendation
It is recommended to implement unique session identifiers and limit the number of connections to a single endpoint per session to minimize the risk of session hijacking.
Other vulnerabilities in WebSocket backend
See all- CVE-2026-27649High
The WebSocket backend uses charging station identifiers to uniquely associate sessions but allows multiple endpoints to connect using the same session identifier. This leads to predictable session identifiers, enabling session hijacking or shadowing.
- CVE-2026-27764High
The WebSocket backend uses charging station identifiers to uniquely associate sessions but allows multiple endpoints to connect using the same session identifier. This leads to predictable session identifiers, enabling session hijacking or shadowing.
- CVE-2026-54479High
The WebSocket backend uses predictable session identifiers because multiple endpoints can connect using the same session identifier. This allows unauthorized users to impersonate others or cause a denial-of-service condition by overwhelming the backend with valid session requests.
Original NVD description (English source)
The WebSocket backend uses charging station identifiers to uniquely associate sessions but allows multiple endpoints to connect using the same session identifier. This implementation results in predictable session identifiers and enables session hijacking or shadowing, where the most recent connection displaces the legitimate charging station and receives backend commands intended for that station. This vulnerability may allow unauthorized users to authenticate as other users or enable a malicious actor to cause a denial-of-service condition by overwhelming the backend with valid session requests.