CVE-2026-44383
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 · uneditedMultiple connections to the backend using the same charging station ID are allowed, which could allow an attacker to deploy multiple instances of malicious OCPP clients to overwhelm 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 confidenceThe vulnerability allows multiple concurrent OCPP (Open Charge Point Protocol) connections using the same charging station ID, enabling attackers to deploy multiple malicious clients that can exhaust backend resources through connection flooding.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
CVSS 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
- None
- Integrity
- None
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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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Inspect OCPP server connection uniqueness configurationLocate the OCPP server configuration files (commonly ocpp.conf, application.properties, or similar) and search for settings that control whether duplicate charging station IDs are permitted. Look for flags such as 'enforceStationIdUniqueness', 'rejectDuplicateStationId', 'allowMultipleConnections', or similar naming patterns.Affected if The configuration explicitly allows multiple connections per station ID or lacks any uniqueness enforcement setting (defaults to permissive)
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Review connection logs for duplicate station IDsExamine OCPP server logs, connection tables, or active session records for entries showing multiple simultaneous connections using identical stationId values. Filter logs for connection events and group by stationId to identify duplicates.Affected if Logs show concurrent connections from the same charging station ID existing at the same timestamp
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Verify authentication enforcement on new connectionsCheck whether the OCPP server validates authentication credentials (client certificates, Basic Auth, API keys, or OCPP-specific authentication) before allowing a connection. Determine if duplicate station ID connections bypass or skip authentication checks.Affected if The server accepts new connections with duplicate station IDs without requiring re-authentication or rejecting based on existing session
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Check for connection flooding detection mechanismsInspect the OCPP server for rate limiting, connection throttling, or flood detection features. Look for settings that would limit connections per station ID or per source IP within a time window.Affected if No connection rate limiting or per-station-ID connection caps are configured or active
The environment is vulnerable if the OCPP server accepts multiple concurrent connections using the same charging station ID without enforcing uniqueness or rejecting duplicates.
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 connection uniqueness enforcement to reject or disconnect existing connections when a new connection request uses an already-active charging station ID, combined with authentication validation.
- Consultation4.0 h
- Implementation12.0 h
- Testing6.0 h
- Review / QA3.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $7,040.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2026-44383 — 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-2026-44383 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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A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.
- 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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