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Vulnerability record · CVE-2026-27652 · published 27 February 2026

CVE-2026-27652: Cloudcharge.se insufficient session expiration vulnerability

Cloudcharge · Cloudcharge.Se

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.

6.9 CVSS 4.0 Medium EPSS 0.58% · top 54.5% CWE-613 · Insufficient session expiration
6.9CVSS 4.0 base score
0.58%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
3References
17 Jun 2026Last modified by NVD

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.

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://cloudcharge.tech/support/contact/ Product
https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-057-03.json Third Party Advisory
https://www.cisa.gov/news-events/ics-advisories/icsa-26-057-03 Third Party AdvisoryUS Government Resource

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.3CVE-2026-20781Cloudcharge.se missing authentication for critical function vulnerabilityWebSocket endpoints lack proper authentication mechanisms, enabling attackers to perform unauthorized station impersonation and manipulate data sent …EPSS 0.53%8.7CVE-2026-25114Cloudcharge.se improper restriction of authentication attempts vulnerabilityThe WebSocket Application Programming Interface lacks restrictions on the number of authentication requests. This absence of rate limiting may allow …EPSS 0.48%6.9CVE-2026-20733Cloudcharge.se insufficiently protected credentials vulnerabilityCharging station authentication identifiers are publicly accessible via web-based mapping platforms.EPSS 0.28%

Source: NIST National Vulnerability Database (record CVE-2026-27652), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.