CVE-2020-5237
Relative Path Traversal in oneup/uploader-bundle
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
Relative Path Traversal in oneup/uploader-bundle
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.
- Record
CVE-2020-5237- CVSS 3.1
- 8.8 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-23
- Updated
- 2026-11-02
EUVDEUVD-2020-0321
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.
- Record
EUVD-2020-0321- CVSS 3.1
- 8.8 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-x8wj-6m73-gfqp
Relative Path Traversal (CWE-23) in chunked uploads in oneup/uploader-bundle
Impact
The vulnerability was identified in the web service for a chunked file upload. While the names of the POST parameters vary with the used frontend, their values are always used in the same way to build a path where the chunks are stored and assembled temporarily. By not validating these parameters properly, OneupUploaderBundle is susceptible to a path traversal vulnerability which can be exploited to upload files to arbitrary folders on the filesystem. The assembly process can further be misused with some restrictions to delete and copy files to other locations.
The vulnerability can be exploited by any users that have legitimate access to the upload functionality and can lead to arbitrary code execution, denial of service and disclosure of confidential information.
Patches
Yes, see version 1.9.3 and 2.1.5.
References
https://owasp.org/www-community/attacks/Path_Traversal
Credits:
This security vulnerability was found by Thibaud Kehler of SySS GmbH. E-Mail: thibaud.kehler@syss.de
- Record
GHSA-x8wj-6m73-gfqp- CVSS 3.1
- 8.8 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-22, CWE-23
- Updated
- 2026-11-02
NVD
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.
- Record
CVE-2020-5237- CVSS 3.1
- 8.8 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - CVSS 2.0
- 6.5 Medium
AV:N/AC:L/Au:S/C:P/I:P/A:P - Weakness
- CWE-23, CWE-22
- Updated
- 2026-11-02
OSV
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.
- Record
CVE-2020-5237- CVSS 3.1
- 8.8 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
OSVGHSA-x8wj-6m73-gfqp
Relative Path Traversal (CWE-23) in chunked uploads in oneup/uploader-bundle
Impact
The vulnerability was identified in the web service for a chunked file upload. While the names of the POST parameters vary with the used frontend, their values are always used in the same way to build a path where the chunks are stored and assembled temporarily. By not validating these parameters properly, OneupUploaderBundle is susceptible to a path traversal vulnerability which can be exploited to upload files to arbitrary folders on the filesystem. The assembly process can further be misused with some restrictions to delete and copy files to other locations.
The vulnerability can be exploited by any users that have legitimate access to the upload functionality and can lead to arbitrary code execution, denial of service and disclosure of confidential information.
Patches
Yes, see version 1.9.3 and 2.1.5.
References
https://owasp.org/www-community/attacks/Path_Traversal
Credits:
This security vulnerability was found by Thibaud Kehler of SySS GmbH. E-Mail: thibaud.kehler@syss.de
- Record
GHSA-x8wj-6m73-gfqp- CVSS 3.1
- 8.8 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-22, CWE-23
- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
oneup/uploader-bundlePackagist | 2.0.0 up to 2.1.5 | 2.1.5 |
oneup/uploader-bundlePackagist | 1.0.0 up to 1.9.3 | 1.9.3 |
oneup/uploader-bundlePackagist | 2.0.0 up to 2.1.5, plus listed versions 2.0.12.0.22.0.32.0.42.0.5 Show 7 moreShow less2.0.62.0.72.1.02.1.12.1.22.1.32.1.4 | 2.1.5 |
oneup/uploader-bundlePackagist | 1.0.0 up to 1.9.3, plus listed versions 1.3.21.4.01.5.01.6.01.7.0 Show 22 moreShow less1.7.11.7.21.7.31.7.41.7.51.7.61.7.71.8.01.8.11.8.21.8.31.9.01.9.11.9.2v1.0.0v1.0.1v1.1.0v1.2.0v1.2.1v1.2.2v1.3.0v1.3.1 | 1.9.3 |
History
| Recorded | Changed | Sources |
|---|---|---|
| facts | ||
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2020-5237 is a high vulnerability (CVSS 8.8) in 1up-lab Oneup/uploader-bundle, published February 5, 2020. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 3.93%, the 90th percentile. Fixed in oneup/uploader-bundle 2.1.5.
References
github.com/1up-lab/OneupUploaderBundle/security/advisories/GHSA-x8wj-6m73-gfqp
syss.de/fileadmin/dokumente/Publikationen/Advisories/SYSS-2020-003.txt
nvd.nist.gov/vuln/detail/CVE-2020-5237