CVE-2026-20895Network attack vector

Station impersonation via reusable predictable session identifiers

Published Feb 26, 2026 · Updated Feb 26, 2026

Insufficient session expiration in all versions of Ev2Go ev2go.io allows remote attackers to impersonate stations over WebSocket. The backend treats predictable charging-station identifiers as unique session keys but accepts concurrent endpoints with the same key, letting the newest connection replace the legitimate station. No privileges or user interaction are required; the replacement endpoint receives commands intended for the station, and repeated valid sessions can interrupt backend service.

CVSS severity6.9
Medium
EPSS probability0.36%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Insufficient session expiration in all versions of Ev2Go ev2go.io allows remote attackers to impersonate stations over WebSocket. The backend treats predictable charging-station identifiers as unique session keys but accepts concurrent endpoints with the same key, letting the newest connection replace the legitimate station. No privileges or user interaction are required; the replacement endpoint receives commands intended for the station, and repeated valid sessions can interrupt backend service.

The record

CVE
CVE-2026-20895
Published
Feb 26, 2026
Updated
Feb 26, 2026
Vendor
Ev2Go
Product
ev2go.io
Classifications
CWE-613, T1499.002
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 26, 2026CVE publishedPublication date reported by the CVE source.
  2. Feb 26, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=All versions

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Ev2Go · ev2go.ioversion=All versions

Published CVSS scores

6.9ICS-CERTCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N
7.5NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
7.3ICS-CERTCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-613Insufficient Session Expiration
T1499.002Service Exhaustion Flood

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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