Arduino Create Agent path traversal - arbitrary file deletion vulnerability

Exploitation

No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.

CVSS

6.1 · CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L

EPSS

• CVE-2023-43801: 0.34% estimated exploitation activity in the next 30 days; percentile 27.83 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.

As published by the source; long descriptions are shortened.

Impact The 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. Further details are available in the references. Fixed Version 1.3.3 References The issue was reported by Nozomi Networks Labs. Further details on the issue are available at the following URL: https://www.nozominetworks.com/blog/security-flaws-affect-a-component-of-the-arduino-create-cloud-ide

Published by the source

18 Oct 2023, 17:34 UTC

Last modified by the source

11 Nov 2023, 05:04 UTC

Source last checked

26 Oct 2026, 15:00 UTC

1. Revision 1 · created · 26 Oct 2026

   Published from ghsa record GHSA-mjq6-pv9c-qppq

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# Patch Next advisory brief: CVE-2023-43801

Advisory: Arduino Create Agent path traversal - arbitrary file deletion vulnerability
IDs: CVE-2023-43801, GHSA-mjq6-pv9c-qppq
Record: https://patchnext.com/advisories/cve-2023-43801 (revision 1, source checked 26 Oct 2026, 15:00 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: Medium (CVSS 6.1)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: github.com/arduino/arduino-create-agent 1.3.3. A vendor fix does not mean a deployment is fixed.

## Affected components
- Go github.com/arduino/arduino-create-agent: affected < 1.3.3; fixed in 1.3.3

## Suggested inspection (read-only)
- Go github.com/arduino/arduino-create-agent: check the installed version with your package manager.

## Supported action
Upgrade each affected component to a fixed version on its release line. For a transitive dependency, upgrade the parent package or add an override or constraint, then regenerate the lockfile. Redeploy every environment that ran an affected version.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on github.com/arduino/arduino-create-agent.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://github.com/advisories/GHSA-mjq6-pv9c-qppq (GitHub-reviewed advisory GHSA-mjq6-pv9c-qppq lists affected ranges: Go github.com/arduino/arduino-create-agent >=0 <1.3.3)

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