Critical severity · published Feb 26, 2026
CVE-2026-20792
Chargemap chargemap.com Improper Restriction of Excessive Authentication Attempts
9.8
CVSS
0.6%
EPSS
No
On KEV
Description
The WebSocket Application Programming Interface lacks restrictions on
the number of authentication requests. This absence of rate limiting may
allow an attacker to conduct denial-of-service attacks by suppressing
or misrouting legitimate charger telemetry, or conduct brute-force
attacks to gain unauthorized access.
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)0.6% · higher than 46% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CH
chargemap.com · Chargemap
All versions · source: vendor, NVD
In the news
AdvisoryCritical
Chargemap chargemap.com
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 Chargemap chargemap.com are affected:
chargemap.com vers:all/* (CVE-2026-25851, CVE-2026-20792, CVE-2026-25711, CVE-2026-20791)
CVSS
Vendor
Equipment
Vulnerabilities
v3 9.4
Chargemap
Chargemap chargemap.com
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: France
Vulnerabilities
Expand All +
CVE-2026-25851
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
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-20792
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-20792
Product
https://chargemap.com/en-us/support
Third Party Advisory
https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-057-05.json
Third Party Advisory
https://www.cisa.gov/news-events/ics-advisories/icsa-26-057-05
More from chargemap.com
9.8
CVE-2026-25851
Chargemap chargemap.com Missing Authentication for Critical Function
7.5
CVE-2026-20791
Chargemap chargemap.com Insufficiently Protected Credentials
7.5
CVE-2026-25711
Chargemap chargemap.com Insufficient Session Expiration
