Vulnerability · Published Mar 20, 2026 · Assigned by GitHub_M

CVE-2026-33071FileRise: WebDAV upload path bypasses filename validation enforced by regular uploads

Medium 4.3

In plain English

A medium-severity unrestricted file upload in FileRise from error311. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.7% (higher than 52% of all known vulnerabilities).

Severity (CVSS 3.1)4.3Medium

Exploit odds (30 days)0.7%top 48.3% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

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.

Affected products (as reported)

Vendor	Product	Versions
error311	FileRise	< 3.8.0

Weakness: CWE-434, CWE-552 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

References

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