PT-2026-26698 · Ctek · Chargeportal

Published 2026-03-20 · Updated 2026-03-20 · CVE-2026-31904

NVD

CVSS v3.1

7.5

High

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

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 mis-routing legitimate charger telemetry, or conduct brute-force attacks to gain unauthorized access.

Fix

Improper Restriction of Excessive Authentication Attempts

Weakness Enumeration

CWE-307

Related Identifiers

CVE-2026-31904

Affected Products

Chargeportal

References · 4

• https://nvd.nist.gov/vuln/detail/CVE-2026-31904 · Security Note
• https://ctek.com/support · Note
• https://cisa.gov/news-events/ics-advisories/icsa-26-078-06 · Note
• https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-078-06.json · Note