jDownloads Extension up to 4.1.7 update_file path traversal

Summaryinfo

A vulnerability, which was classified as critical, was found in jDownloads Extension up to 4.1.7. Affected by this vulnerability is an unknown functionality. Executing a manipulation of the argument update_file can lead to path traversal. This vulnerability is registered as CVE-2026-117542. It is possible to launch the attack remotely. No exploit is available.

Detailsinfo

A vulnerability was found in jDownloads Extension up to 4.1.7. It has been declared as critical. This vulnerability affects some unknown functionality. The manipulation of the argument update_file with an unknown input leads to a path traversal vulnerability. The CWE definition for the vulnerability is CWE-22. The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

Joomla Extension - jdownloads.com - Authenticated path traversal in jDownloads < 4.1.8 - A manipulated `update_file` form parameter could bypass the intended server-file selection restrictions and move files from outside the permitted selection directory or assign them to a download. This could expose file contents and remove source files from their original locations.

The advisory is shared for download at jdownloads.com. This vulnerability was named CVE-2026-117542 since 10/27/2026. The exploitation appears to be easy. The attack can be initiated remotely. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 11/12/2026). The MITRE ATT&CK project declares the attack technique as T1006.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Name

• jDownloads Extension

Version

• 4.1.0
• 4.1.1
• 4.1.2
• 4.1.3
• 4.1.4
• 4.1.5
• 4.1.6
• 4.1.7

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