CVE-2026-117542: jDownloads authenticated path traversal via update_file parameter

CVE-2026-117542 · Severity: info · Published 2026-11-12

jDownloads is a file management extension for the Joomla content management system. An authenticated user can manipulate a form parameter to move files outside their intended directory, potentially exposing sensitive file contents and removing source files from their original locations. The vulnerability requires login credentials to exploit.

Technologies: jDownloads. Vendors: jDownloads.

Quick answers

Is CVE-2026-117542 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-117542 being exploited in the wild.
How severe is CVE-2026-117542?
Informational severity, published 12 November 2026.
Which products and versions are affected?
jDownloads < 4.1.8.
Is there a fix for CVE-2026-117542?
Yes: fixed in jDownloads 4.1.8. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-117542 attacked?
It is attacked over the network, in a software library.
Am I affected by CVE-2026-117542?
Check whether you run jDownloads at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

  • Fixed in: jDownloads 4.1.8

Technical details

An authenticated path traversal vulnerability in jDownloads versions prior to 4.1.8 exists in the `update_file` form parameter handling. An authenticated user can bypass server-file selection restrictions by sending a crafted parameter value, allowing arbitrary file access and relocation within the filesystem. The fix was released in version 4.1.8 as part of a security update.

Affected products

  • jDownloads jDownloads < 4.1.8

Timeline

  • 2026-11-12: patched: Security update released

References

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