CVE-2026-57491

MEDIUM 6.5

FileRise: ZIP extraction writes blocked file extensions to disk, bypassing the upload blocklist

CVSS Score

6.5

EPSS Score

0.0%

EPSS Percentile

0th

FileRise is a self-hosted web-based file manager with multi-file upload, editing, and batch operations. Prior to 3.16.0, FileRise archive extraction does not apply UploadNamePolicy::isAllowedForWrite() before ZipArchive::extractTo() writes entries into the destination directory. An authenticated user with upload and extract permissions can place a blocked extension such as a PHP-family file inside a ZIP and cause it to be written to disk even when normal uploads reject that filename. Post-extraction metadata pruning does not remove the blocked file, so deployments that execute uploaded content may permit code execution. This issue is fixed in version 3.16.0.

CWE	CWE-434
Vendor	error311
Product	filerise
Published	Oct 14, 2026

Stay Ahead of the Next One

Get instant alerts for error311 filerise

Be the first to know when new medium vulnerabilities affecting error311 filerise are published — delivered to Slack, Telegram or Discord.

Get Free Alerts → Free · No credit card · 60 sec setup

CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

High

Availability

None

Affected Versions

error311 / FileRise

< 3.16.0

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/error311/FileRise/security/advisories/GHSA-c4g2-8fg6-5xrr github.com: https://github.com/error311/FileRise/commit/f7114ca2a4e624238dda0d097a07ad6b05c11bb6 github.com: https://github.com/error311/FileRise/releases/tag/v3.16.0