Arbitrary File Upload Affecting studio-42/elfinder package, versions <2.1.70
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-PHP-STUDIO42ELFINDER-20186957
- published28 Sept 2026
- disclosed2 Sept 2026
- creditUnknown
Introduced: 2 Sep 2026
NewCVE-2026-81891 (opens in a new tab)How to fix?
Upgrade Studio-42/elFinder to version 2.1.70 or higher.
Overview
Affected versions of this package are vulnerable to Arbitrary File Upload through the extract process. An attacker can execute arbitrary PHP code on the server by uploading a ZIP archive containing PHP-executable files and extracting them into a web-accessible directory. This is only exploitable if the server is configured to execute files with extensions such as .phtml, .phar, .php5, or .php3 as PHP scripts and the user has permission to upload ZIP files.