CVE-2026-20748: The WebSocket backend uses charging station identifiers to uniquely associate sessions but allows multiple end

Routine

HIGH 7.3REMOTEMITIGATE

CVE-2026-20748 is a high-severity flaw (CVSS 7.3) affecting api.everon.io. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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

Why this priority

High severity
Remotely exploitable, no login, no user action

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	7.3 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.3% (top 81%)
CISA exploited list	No
Weakness	CWE-613
Published	2026-03-06
Last modified	2026-06-17

Publisher (CNA): ICS-CERT · Vendor: everon

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-03-06 16:16 UTCPublished CVE record published
2026-06-17 10:17 UTCUpdated Record last modified

everon api.everon.io MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy api.everon.io || rpm -q api.everon.io || api.everon.io --version

No fixed or unaffected release known

Apply the vendor mitigation from the advisory, disable the affected feature, or restrict network access.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-20748?

api.everon.io: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2026-20748 being exploited?

CVE-2026-20748 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-20748 affect?

CVE-2026-20748 affects api.everon.io. Severity is high (CVSS 7.3). 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 se

How urgent is CVE-2026-20748?

Priority 35/100. High severity; Remotely exploitable, no login, no user action

Related CVEs

CVE-2026-26288 CRITICAL 9.4 MITIGATE WebSocket endpoints lack proper authentication mechanisms, enabling attackers to perform unauthorized station
CVE-2026-24696 HIGH 7.5 MITIGATE The WebSocket Application Programming Interface lacks restrictions on the number of authentication requests

References

← Back to latest CVEs