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
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| cloudreve | cloudreve | < 4.16.1 | 4.16.1 |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| Go | github.com/cloudreve/Cloudreve | all versions | — | GO-2026-6289 |
| Go | github.com/cloudreve/Cloudreve/v3 | all versions | — | GO-2026-6289 |
| Go | github.com/cloudreve/Cloudreve/v4 | <= 4.0.0-20260606032813-26b6b1044b02 | — | GHSA-w8j7-39hp-8x59 |
| Go | github.com/cloudreve/Cloudreve/v4 | all versions | — | GO-2026-6289 |
References
- GitHub Security Advisory (GHSA-w8j7-39hp-8x59) vendor-advisory
- VulnCheck Advisory: Cloudreve before 4.16.1 Path Traversal via Remote Download third-party-advisory