CVE-2026-36227
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 · uneditedDirectory Traversal vulnerability in Easy Chat Server 3.1 allows a remote attacker to obtain sensitive information and execute arbitrary code via the UserName parameter
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 confidenceEasy Chat Server 3.1 contains a directory traversal vulnerability in the UserName parameter that allows remote attackers to access files outside the web root directory. This can expose sensitive system files and potentially execute arbitrary code by traversing to executable locations.
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
- None
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
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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Confirm Easy Chat Server installationCheck for Easy Chat Server processes running on the system using task manager or command: tasklist | findstr -i chatAffected if Easy Chat Server process is running on the system
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Verify the version is 3.1Check the installed version by reviewing the application installation directory, typically in Program Files, or right-click the executable and view Properties > Details for version informationAffected if The installed version is Easy Chat Server 3.1 specifically
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Determine if web interface is enabledCheck if the HTTP/HTTPS service is running. Look for ports 80, 443, or the default chat server port in netstat output or check the server configuration for web access settingsAffected if The web server component is active and accepting HTTP connections
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Identify network exposureReview firewall rules and network binding configuration to determine if the web interface is accessible from network addresses. Check if the service binds to all interfaces (0.0.0.0) vs localhost onlyAffected if The web interface is accessible over the network (not localhost-only)
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Inspect UserName parameter handlingLocate the login or user authentication form in the web application. Review the application logs or intercept a test request to observe how the UserName parameter is processed by the serverAffected if The UserName parameter in the login/authentication functionality accepts user-supplied input without validation
If Easy Chat Server version 3.1 is running with its web interface enabled and accessible, and the UserName parameter accepts input, the environment is affected by this directory traversal vulnerability.
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 strict input validation and path sanitization for the UserName parameter, using allowlist validation and canonicalizing paths to prevent traversal sequences (../). Restrict file system access to intended directories only.
- Consultation4.0 h
- Implementation8.0 h
- Testing4.0 h
- Review / QA2.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2026-36227 — 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-2026-36227 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
- No spam, self-promotion, credentials, or personal data