CVE-2026-33329

Name: CVE-2026-33329
Creator: NVD / NIST
Published: 2026-03-24T20:16:28.217+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.1/10EPSS 0.44%

Last modified Jun 17, 2026

CVE-2026-33329 is a high-severity vulnerability rated 8.1/10 on the CVSS scale. FileRise is a self-hosted web file manager / WebDAV server. From version 1.0.1 to before version 3.10.0, the resumableIdentifier parameter in the Resumable.js chunked upload handler (UploadModel::handleUpload()) is concatenated directly into filesystem paths without any sanitization. EPSS estimates a 0.44% chance of exploitation in the next 30 days.

Description

FileRise is a self-hosted web file manager / WebDAV server. From version 1.0.1 to before version 3.10.0, the resumableIdentifier parameter in the Resumable.js chunked upload handler (UploadModel::handleUpload()) is concatenated directly into filesystem paths without any sanitization. An authenticated user with upload permission can exploit this to write files to arbitrary directories on the server, delete arbitrary directories via the post-assembly cleanup, and probe file/directory existence. This issue has been patched in version 3.10.0.

Metrics

CVSS 3.1

8.1/10

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

EPSS Probability

0.44%

35.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Filerise	Filerise	>= 1.0.1, < 3.10.0

References

https://github.com/error311/FileRise/commit/3871f9fd1661688bed4f7dd23912be0ebf50973cPatch
https://github.com/error311/FileRise/releases/tag/v3.10.0Product, Release Notes
https://github.com/error311/FileRise/security/advisories/GHSA-c2jm-4wp9-5vrhExploit, Mitigation, Vendor Advisory

Timeline

Published: Mar 24, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-33329?

How severe is CVE-2026-33329?

CVE-2026-33329 has a CVSS score of 8.1/10 (HIGH severity). The EPSS model estimates a 0.44% probability of exploitation in the next 30 days.

How do I fix CVE-2026-33329?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-33329?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST