CVE-2026-33071

MEDIUM 4.3

FileRise: WebDAV upload path bypasses filename validation enforced by regular uploads

CVSS Score

4.3

EPSS Score

0.1%

EPSS Percentile

30th

FileRise is a self-hosted web file manager / WebDAV server. In versions prior to 3.8.0, the WebDAV upload endpoint accepts any file extension including .phtml, .php5, .htaccess, and other server-side executable types, bypassing the filename validation enforced by the regular upload path. In non-default deployments lacking Apache's LocationMatch protection, this leads to remote code execution. When files are uploaded via WebDAV, the createFile() method in FileRiseDirectory.php and the put() method in FileRiseFile.php accept the filename directly from the WebDAV client without any validation. In contrast, the regular upload endpoint in UploadModel::upload() validates filenames against REGEX_FILE_NAME. This issue is fixed in version 3.8.0.

CWE	CWE-434 CWE-552
Vendor	error311
Product	filerise
Published	Mar 20, 2026
Last Updated	Mar 20, 2026

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CVSS v3 Breakdown

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

Low

Availability

None

Affected Versions

error311 / FileRise

< 3.8.0

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/error311/FileRise/security/advisories/GHSA-46gv-gf5f-wvr2 github.com: https://github.com/error311/FileRise/releases/tag/v3.8.0