CVE-2026-54479
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. 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 · high confidenceThe WebSocket backend's session management uses predictable identifiers derived from charging station IDs, allowing attackers to guess or reuse session IDs. Multiple endpoints can connect with the same session ID, enabling session hijacking (authenticating as other users) and DoS attacks via session exhaustion.
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
- Low
- Integrity
- Low
- Availability
- Low
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
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 WebSocket backend in useReview system architecture documentation or inspect running services for WebSocket server processes. Check network listeners on common WebSocket ports (80, 443, 8080, 8443) for WebSocket upgrade connections.Affected if A WebSocket server handles session management for the system
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Examine session ID formatCapture a sample session ID from the WebSocket handshake or connection. Inspect whether the ID contains or is derived directly from a charging station ID, serial number, or other deterministic value. Compare multiple session IDs to check for predictable patterns.Affected if Session IDs are constructed from charging station identifiers or follow predictable sequences
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Verify session uniqueness enforcementAttempt to open multiple WebSocket connections using the same session ID from different endpoint sources. Check server logs and behavior when duplicate session IDs are used simultaneously.Affected if The server allows multiple concurrent connections with identical session IDs
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Review session ID generation methodExamine server configuration files or source code for the session ID generation function. Check whether cryptographic random number generation (CSPRNG) is used versus deterministic derivation from station data.Affected if Session IDs are generated through non-cryptographic or deterministic methods
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Audit session resource limitsCheck server configuration for session limits per ID, connection rate limits, and session expiration policies. Review logs for signs of session exhaustion or resource depletion.Affected if No per-session connection limits exist or session cleanup is absent
Your environment is affected if a WebSocket backend handles sessions using predictable IDs derived from charging station identifiers and permits multiple concurrent connections with the same session ID.
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 session identifiers and enforce single-session-per-ID policy to prevent reuse and predictibility.
- Consultation4.0 h
- Implementation12.0 h
- Testing8.0 h
- Review / QA4.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2026-54479 — 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-2026-54479 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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