High severity · published Mar 24, 2026
CVE-2026-33329
FileRise: Path Traversal in `resumableIdentifier` Leading to Arbitrary File Write, Recursive Directory Deletion, and Limited Existence Oracle
8.1
CVSS
0.5%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 40% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FI
FileRise · error311
>= 1.0.1, < 3.10.0 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-33329
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-33329
Patch
https://github.com/error311/FileRise/commit/3871f9fd1661688bed4f7dd23912be0ebf50973c
Product
https://github.com/error311/FileRise/releases/tag/v3.10.0
Exploit
https://github.com/error311/FileRise/security/advisories/GHSA-c2jm-4wp9-5vrh
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