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6.9
Unsecured Charging Station Sessions Allow Session Hijacking
CVE-2026-26290
Summary
The vulnerability affects the WebSocket backend of a charging system. It allows unauthorized users to take control of another user's session, potentially allowing them to access someone else's account or disrupt the system by overwhelming it with requests. To fix this issue, update the WebSocket backend to ensure unique and secure session identifiers are used for each charging station.
What to do
No fix is available yet. Check with your software vendor for updates.
Affected software
| Vendor | Product | Affected versions | Fix available |
|---|---|---|---|
| ev.energy | ev.energy | All versions | – |
Original title
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 p...
Original description
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.
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.
nvd CVSS3.1
9.8
nvd CVSS4.0
6.9
Vulnerability type
CWE-613
- https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-05... Third Party Advisory
- https://www.cisa.gov/news-events/ics-advisories/icsa-26-057-07 Third Party Advisory US Government Resource
- https://www.ev.energy/en-us Product
Published: 27 Feb 2026 · Updated: 12 Mar 2026 · First seen: 6 Mar 2026