CVE-2026-55495

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.

CVSS v3 4.3 MEDIUM

4.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/cloudreve/cloudreve/commit/7968e50429efab40ffa8f57fecdfbd5a73d23630
https://github.com/cloudreve/cloudreve/releases/tag/4.17.0
https://github.com/cloudreve/cloudreve/security/advisories/GHSA-49h3-cwhj-4737
https://github.com/cloudreve/cloudreve/security/advisories/GHSA-49h3-cwhj-4737

Configurations

No configuration.

History

31 Jul 2026, 20:16

Type	Values Removed	Values Added
References	~~() https://github.com/cloudreve/cloudreve/security/advisories/GHSA-49h3-cwhj-4737 -~~	() https://github.com/cloudreve/cloudreve/security/advisories/GHSA-49h3-cwhj-4737 -

31 Jul 2026, 04:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-07-31 04:17

Updated : 2026-07-31 20:16

NVD link : CVE-2026-55495

Mitre link : CVE-2026-55495

CVE.ORG link : CVE-2026-55495

JSON object : View

Products Affected

No product.

CWE

CWE-22

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

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