CVE-2026-25851
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 · uneditedWebSocket 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.
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 · high confidenceWebSocket endpoints for the OCPP (Open Charge Point Protocol) interface lack proper authentication, allowing unauthenticated attackers to connect using known or discovered charging station identifiers and impersonate legitimate chargers. This enables unauthorized execution of OCPP commands and manipulation of backend data.
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 Chargemap deploymentLocate any Chargemap Chargemap.com service in your environment - check running processes, containers, or installed packages for 'chargemap' or related OCPP servicesAffected if Chargemap service is present in the environment
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Locate OCPP WebSocket endpointsScan for open ports exposing WebSocket connections (typically 8080, 8443, or custom WS ports); examine server configuration files for OCPP WebSocket endpoint definitionsAffected if WebSocket endpoints for OCPP communication are accessible
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Test endpoint authentication requirementAttempt to connect to the OCPP WebSocket endpoint using a known or guessed charging station identifier without providing any authentication credentialsAffected if Connection succeeds without requiring authentication or valid credentials
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Verify station identifier validationSend OCPP messages with arbitrary station identifiers to the WebSocket endpoint and observe if the server accepts commands without validating the station's legitimacyAffected if Server accepts and processes commands from unknown or unverified station identifiers
A user is affected if they have deployed Chargemap and its OCPP WebSocket endpoints accept connections without requiring authentication or validating charging station identities.
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 strong authentication for WebSocket connections (e.g., TLS client certificates, API keys, or token-based authentication) and validate station identifiers before accepting any commands.
- Consultation8.0 h
- Implementation24.0 h
- Testing12.0 h
- Review / QA8.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $14,656.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2026-25851 — 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-2026-25851 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
- No weaponised exploit code, or anything meant to cause harm
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