Auth bypass in Everon Api.everon.io
CVE-2026-26288
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.
Vulnerability class: Broken Authentication
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.4 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L.
EPSS exploit prediction
EPSS: 0.007 (50.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 50th percentile — 50.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.007 · change: +0.000
Affected products
- Everon Api.everon.io — versions All versions
Weakness classification (CWE)
References
- www.cisa.gov/news-events/ics-advisories/icsa-26-062-08 (US Government Resource)
- github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-062-08.js… (Product)
Frequently asked questions
- What is CVE-2026-26288?
- CVE-2026-26288 is a critical-severity vulnerability in Everon Api.everon.io, classified under Missing Authentication for Critical Function. CVSS score: 9.4/10. Published 2026-03-06.
- How severe is CVE-2026-26288?
- Critical severity. CVSS v3 base score is 9.4 out of 10.