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Create AgentApplication · Arduino

CVE-2023-43801

HIGH · 7.1 CVSS v3.1 Published 2023-10-18
Fix available
A fix is available. Upgrade to 1.3.3 or later.
See remediation →
73/100
Remediation priority · Elevated
Zero-click

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 · unedited
Arduino Create Agent is a package to help manage Arduino development. This vulnerability affects the endpoint `/v2/pkgs/tools/installed` and the way it handles plugin names supplied as user input. A user who has the ability to perform HTTP requests to the localhost interface, or is able to bypass the CORS configuration, can delete arbitrary files or folders belonging to the user that runs the Arduino Create Agent via a crafted HTTP DELETE request. This issue has been addressed in version `1.3.3`. Users are advised to upgrade. There are no known workarounds for this issue.

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 confidence

Path traversal vulnerability in Arduino Create Agent's `/v2/pkgs/tools/installed` endpoint allows arbitrary file/folder deletion via crafted HTTP DELETE requests with traversal sequences (e.g., ../../../') in the plugin name parameter. Attackers with localhost access or CORS bypass can delete files accessible to the service account.

MitigationUpgrade to Arduino Create Agent version 1.3.3 or later. No workarounds available; immediate patching is required.

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 data
Create AgentApplication
Affected:< 1.3.3

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
Local
Complexity
Low
Privileges
Low
User interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
High

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/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 checks

Work through these to decide whether this CVE applies to you.

  1. Identify Arduino Create Agent installation
    Check common installation directories: on Windows look in Program Files\Arduino\ or %LOCALAPPDATA%\Arduino\, on Linux check /opt/arduino-create-agent or /usr/local/bin/, on macOS check /Applications/ or ~/Applications/. Also check running processes for 'arduino-create-agent' or similar process names.
    Affected if Arduino Create Agent is installed on the system.
  2. Determine installed version
    If installed, check the version: look for a version file in the installation directory (often named version, VERSION, or in package.json), check the executable properties, or run the agent with a version flag if available. Compare the version number to 1.3.3.
    Affected if The installed version is lower than 1.3.3.
  3. Verify service is running and listening
    Check if the Arduino Create Agent service is actively running and listening on a network port. Use commands like 'netstat -an | findstr 8991' (default port) or 'lsof -i :8991' to identify if the service is bound to localhost or a network interface.
    Affected if The service is running and accessible on localhost or a network interface.
  4. Check network accessibility of vulnerable endpoint
    Attempt to access the /v2/pkgs/tools/installed endpoint via curl or similar: 'curl -X DELETE http://localhost:8991/v2/pkgs/tools/installed -d "plugin=name"' or check if CORS headers are present that might allow remote access.
    Affected if The vulnerable endpoint responds to DELETE requests or has permissive CORS settings.

If Arduino Create Agent version below 1.3.3 is installed and the service is running and accessible, the environment is affected by this path traversal vulnerability.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

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.

dbcve · scoped
Upgrade available Upgrade to 1.3.3 or later
Fixed in 1.3.3
Interim mitigation

Upgrade to Arduino Create Agent version 1.3.3 or later. No workarounds available; immediate patching is required.

Recommended fix High confidence

Arduino Create Agent version 1.3.3

  1. Download Arduino Create Agent version 1.3.3 or later from the official Arduino source (github.com/arduino/arduino-create-agent or official Arduino downloads)
  2. Replace the existing installation with the new version
  3. Restart the Arduino Create Agent service
  4. Verify the version is 1.3.3 or higher by checking the application or querying the /version endpoint

Generated from the published advisory — verify against the referenced sources before acting.

Fix this in Create Agent Scoped from the published advisory
  • Consultation2.0 h
  • Implementation3.0 h
  • Testing2.0 h
  • Review / QA1.0 h
8.0 hours of engineering $1,420
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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2023-43801 in production — separate from our analysis above.

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What this is

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.

What belongs here
  • 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