dash-uploader has a directory traversal vulnerability

Exploitation

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

CVSS

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

EPSS

• CVE-2026-38360: 5.98% estimated exploitation activity in the next 30 days; percentile 93.32 (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 An unauthenticated path traversal vulnerability exists in dash-uploader versions 0.1.0 through 0.7.0a2. The library's HTTP request handler at dashuploader/httprequesthandler.py reads three form parameters (uploadid, resumableFilename, resumableIdentifier) from request.form.get() and passes them directly to os.path.join() and os.makedirs() without any sanitization. A single unauthenticated POST /API/dash-uploader request with uploadid set to a relative path (e.g. ../../etc/cron.d or ../venv/lib/python3.13/site-packages) escapes the application's uploads/ directory and writes the supplied file content to the chosen target path under the privilege of the gunicorn / WSGI process. When the chosen target is a Python site-packages directory and the dropped file is a .pth file containing an import-prefixed line, Python's site module executes that line on the next interpreter startup, yielding remote code execution. Other escalation paths reachable from the same primitive include…

Published by the source

8 May 2026, 18:31 UTC

Last modified by the source

31 Aug 2026, 23:00 UTC

Source last checked

26 Oct 2026, 13:50 UTC

1. Revision 3 · amended · 26 Oct 2026

   Amended from ghsa record GHSA-3rf6-x59v-5jfv

2. Revision 2 · amended · 24 Oct 2026

   Amended from osv record GHSA-3rf6-x59v-5jfv

3. Revision 1 · created · 23 Oct 2026

   Published from ghsa record GHSA-3rf6-x59v-5jfv

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# Patch Next advisory brief: CVE-2026-38360

Advisory: dash-uploader has a directory traversal vulnerability
IDs: CVE-2026-38360, GHSA-3rf6-x59v-5jfv
Record: https://patchnext.com/advisories/cve-2026-38360 (revision 3, source checked 26 Oct 2026, 13:50 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: Critical (CVSS 9.8)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor response not established. A vendor fix does not mean a deployment is fixed.

## Affected components
- PyPI dash-uploader: affected >= 0.1.0, <= 0.7.0a2

## Suggested inspection (read-only)
- `python -m pip show dash-uploader`: prints the installed version. Run with the environment that serves production active.

## Supported action
No complete vendor fix is recorded. Follow the primary source's mitigation guidance and check this record again before closing anything.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on dash-uploader.
- 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-3rf6-x59v-5jfv (GitHub-reviewed advisory GHSA-3rf6-x59v-5jfv lists affected ranges: PyPI dash-uploader >=0.1.0 <=0.7.0a2)
- Verified: https://osv.dev/vulnerability/GHSA-3rf6-x59v-5jfv (OSV record GHSA-3rf6-x59v-5jfv lists affected ranges: PyPI dash-uploader >=0.1.0 <=0.7.0a2)

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