CVE-2026-55495
MEDIUMCloudreve: Path Traversal in WOPI PUT_RELATIVE Allows Arbitrary File Creation in Owner Account
Title source: cnaDescription
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.
References (3)
Core 3
Core References
X_Refsource_Confirm x_refsource_confirm
https://github.com/cloudreve/cloudreve/security/advisories/GHSA-49h3-cwhj-4737
X_Refsource_Misc x_refsource_misc
https://github.com/cloudreve/cloudreve/commit/7968e50429efab40ffa8f57fecdfbd5a73d23630
X_Refsource_Misc x_refsource_misc
https://github.com/cloudreve/cloudreve/releases/tag/4.17.0
Scores
CVSS v3
4.3
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Details
CWE
CWE-22
Status
published
Products (1)
cloudreve/cloudreve
< 4.17.0
Published
Jul 31, 2026
Tracked Since
Jul 31, 2026