Moderate severityNVD Advisory· Published Jul 31, 2026· Updated Jul 31, 2026
Cloudreve: Path Traversal in WOPI PUT_RELATIVE Allows Arbitrary File Creation in Owner Account
CVE-2026-55495
Description
Cloudreve is a self-hosted file management and sharing system. Prior to 4.17.0, the WOPI PUT_RELATIVE handler passes X-WOPI-SuggestedTarget to URI.JoinRaw as a path rather than a filename, allowing slash and dot-dot segments to escape the source file directory and create or conditionally overwrite files elsewhere in the same owner account. This issue is fixed in version 4.17.0.
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Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
github.com/cloudreve/Cloudreve/v4Go | < 4.0.0-20260613023150-7968e50429ef | 4.0.0-20260613023150-7968e50429ef |
github.com/cloudreve/Cloudreve/v3Go | <= 3.0.0-20250225100611-da4e44b77af4 | — |
Affected products
1Patches
Vulnerability mechanics
References
4- github.com/advisories/GHSA-49h3-cwhj-4737ghsaADVISORY
- github.com/cloudreve/cloudreve/commit/7968e50429efab40ffa8f57fecdfbd5a73d23630ghsax_refsource_MISCWEB
- github.com/cloudreve/cloudreve/releases/tag/4.17.0ghsax_refsource_MISCWEB
- github.com/cloudreve/cloudreve/security/advisories/GHSA-49h3-cwhj-4737ghsax_refsource_CONFIRMWEB
News mentions
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