CVE-2026-26290
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedThe 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.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · moderate confidenceThe WebSocket backend for charging station management uses predictable session identifiers that allow multiple endpoints to connect with the same session ID. This enables session hijacking where a malicious connection can displace the legitimate charging station and intercept backend commands intended for the original station, or overwhelm the backend with valid session requests causing DoS.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE dataall versionsCVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Network
- Complexity
- Low
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Identify Ev.energy WebSocket serviceLocate the charging station management WebSocket backend service in your environment and confirm it is the Ev.energy Ev.energy productAffected if The service is running Ev.energy Ev.energy WebSocket backend for charging station management
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Inspect WebSocket session configurationExamine the WebSocket server configuration files and code for session handling implementation. Look for how session identifiers are generated and assigned to connecting charging stationsAffected if Session identifiers are generated using non-cryptographic methods or deterministic algorithms
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Verify session uniqueness enforcementCheck whether the backend rejects duplicate connections with the same session ID, or allows multiple simultaneous connections with identical session identifiersAffected if The system permits multiple endpoints to connect using the same session ID concurrently
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Test session validation logicReview the authentication and session validation logic that runs before processing backend commands. Determine if commands from any connection with a valid session ID are accepted without verifying the original legitimate endpointAffected if The backend processes commands from any connection presenting a valid session ID without confirming the requester is the original authenticated station
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Check for connection rate limitingInspect whether the WebSocket backend implements rate limiting or throttling on session connection requests to prevent session-based DoS attacksAffected if No connection rate limiting or session request throttling is configured
A defender is affected if they run Ev.energy Ev.energy WebSocket charging station management and the backend allows multiple connections with the same predictable session ID without proper session binding or rate limiting.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
From vendor dataImplement cryptographically random unique session identifiers, enforce single active session per charging station by rejecting duplicate connections, and add proper session validation and authentication checks before processing commands.
- Consultation6.0 h
- Implementation16.0 h
- Testing10.0 h
- Review / QA6.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $10,656.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2026-26290 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2026-26290 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
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