Critical severity · published Feb 27, 2026
CVE-2026-27647
Mobility46 mobility46.se Insufficient Session Expiration
9.8
CVSS
0.3%
EPSS
No
On KEV
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 vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 28% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
MO
mobility46.se · Mobility46
All versions · source: vendor, NVD
In the news
AdvisoryCritical
Mobility46 mobility46.se
View CSAF Summary Successful exploitation of these vulnerabilities could enable attackers to gain unauthorized administrative control over vulnerable charging stations or disrupt charging services through denial-of-service attacks. The following versions of Mobility46 mobility46.se are affected: mobility46.se vers:all/* (CVE-2026-27028, CVE-2026-26305, CVE-2026-27647, CVE-2026-22878) CVSS Vendor Equipment Vulnerabilities v3 9.4 Mobility46 Mobility46 mobility46.se Missing Authentication for Critical Function, Improper Restriction of Excessive Authentication Attempts, Insufficient Session Expiration, Insufficiently Protected Credentials Background Critical Infrastructure Sectors: Energy, Transportation Systems Countries/Areas Deployed: Worldwide Company Headquarters Location: Sweden Vulnerabilities Expand All + CVE-2026-27028 WebSocket endpoints lack proper authentication mechanisms, enabling attackers to perform unauthorized station impersonation and manipulate data sent to the backend. An unauthenticated attacker can connect to the OCPP WebSocket endpoint using a known or discovered charging station identifier, then issue or receive OCPP commands as a legitimate charger. Given that no authentication is required, this can lead to privilege escalation, unauthorized control of charging infrastructure, and corruption of charging network data reported to the backend. View CVE Details ...
Feb 26, 2026·CISA Advisories
Affected product
MO
mobility46.se
Mobility46
More from mobility46.se
9.8
CVE-2026-26305
Mobility46 mobility46.se Improper Restriction of Excessive Authentication Attempts
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CVE-2026-27028
Mobility46 mobility46.se Missing Authentication for Critical Function
5.3
CVE-2026-22878
Mobility46 mobility46.se Insufficiently Protected Credentials