CVE-2026-101051: Cloudreve before 4.16.1 Path Traversal via Remote Download

Severity: low (CVSS 3.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-09-27 · updated 2026-09-28
Weakness: CWE-22

Description

Cloudreve before 4.16.1 fails to properly sanitize file paths returned by remote downloaders, allowing authenticated users to create files outside the selected destination directory. Attackers can exploit path traversal sequences in downloader metadata to write files to unexpected locations within accessible namespaces.

Affected products

cloudreve: before 4.16.1 — fixed in 4.16.1

How to fix

Upgrade to a fixed version: cloudreve 4.16.1. Check the vendor advisory for mitigations.

References

https://github.com/cloudreve/cloudreve/security/advisories/GHSA-w8j7-39hp-8x59
https://www.vulncheck.com/advisories/cloudreve-before-4.16.1-path-traversal-via-remote-download
https://github.com/cloudreve/cloudreve/security/advisories/GHSA-w8j7-39hp-8x59

Get alerted when CVE-2026-101051 or the next vulnerability affects your stack