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.

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Fixes

Solution

No solution given by the vendor.


Workaround

Everon shut down their platform on December 1st, 2025.

History

Tue, 10 Mar 2026 18:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Mon, 09 Mar 2026 10:15:00 +0000

Type Values Removed Values Added
First Time appeared Everon
Everon api.everon.io
Vendors & Products Everon
Everon api.everon.io

Fri, 06 Mar 2026 15:30:00 +0000

Type Values Removed Values Added
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.
Title Everon api.everon.io Insufficient Session Expiration
Weaknesses CWE-613
References
Metrics cvssV3_1

{'score': 7.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L'}

cvssV4_0

{'score': 6.9, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: icscert

Published:

Updated: 2026-03-10T17:59:09.054Z

Reserved: 2026-02-25T15:28:27.138Z

Link: CVE-2026-20748

cve-icon Vulnrichment

Updated: 2026-03-10T17:49:06.436Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-03-06T16:16:09.707

Modified: 2026-03-10T18:18:05.580

Link: CVE-2026-20748

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-03-09T10:07:25Z

Weaknesses