Vulnerability in Everon Api.everon.io
CVE-2026-20748
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.3 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L.
EPSS exploit prediction
EPSS: 0.003 (15.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 15th percentile — 15.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · 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-2026-20748?
- CVE-2026-20748 is a high-severity vulnerability in Everon Api.everon.io, classified under Insufficient Session Expiration. CVSS score: 7.3/10. Published 2026-03-06.
- How severe is CVE-2026-20748?
- High severity. CVSS v3 base score is 7.3 out of 10.