CVE-2026-27652
HIGHCVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Lifecycle Timeline
2Description
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.
Analysis
Session hijacking in Cloudcharge.Se's WebSocket backend allows remote attackers to impersonate legitimate charging stations by exploiting predictable session identifiers and the acceptance of duplicate connections, enabling command interception and station displacement. An attacker can authenticate as other users or trigger denial-of-service conditions by flooding the backend with valid session requests. …
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Remediation
Within 24 hours: Inventory all systems running affected WebSocket backend versions and isolate charging station management networks from untrusted access. Within 7 days: Implement network segmentation to restrict WebSocket endpoint access and enable comprehensive logging of session identifiers and connection sources. …
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