External Control of File Name or Path Affecting maatwebsite/excel package, versions >=3.1.8, <3.1.70
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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Start learning- Snyk IDSNYK-PHP-MAATWEBSITEEXCEL-20186849
- published28 Sept 2026
- disclosed8 Sept 2026
- creditUnknown
Introduced: 8 Sep 2026
NewCVE-2026-84374 (opens in a new tab)How to fix?
Upgrade maatwebsite/excel to version 3.1.70 or higher.
Overview
Affected versions of this package are vulnerable to External Control of File Name or Path via the store process. An attacker can overwrite arbitrary existing files writable by the PHP process with partially controlled content by supplying a crafted export path, potentially leading to remote code execution if the overwritten file is executed by the web server. This is only exploitable if the application passes an unsanitized, user-controlled value as the export path.
Workaround
This vulnerability can be mitigated by validating the path before passing it to the export process—reject absolute paths and any .. segment, or derive the filename server-side and never build it from request input.