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CVE-2026-62323 Details

ANALYZED

This CVE record has been analyzed and enriched by NVDAPI.com as an independent party.

Description

Cloudreve is a self-hosted file management and sharing system. Prior to 4.17.0, ViewerSessionValidation uses only the session-id prefix of a WOPI access token and does not enforce the requested viewer action, allowing a malicious or compromised WOPI viewer with a view session to forge the token suffix and invoke WOPI write routes for the underlying file. This issue is fixed in version 4.17.0.

Metrics

CVSS 3.x Severity and Vector Strings:

VolerionCVSS-B:2.6 LOWVector:CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:L/A:N

CNA: [email protected]CVSS-B:6.3 MEDIUMVector:CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:H/A:N

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://github.com/cloudreve/cloudreve/security/advisories/GHSA-c3jm-gv5r-9wcp	CISA-ADP	AdvisoryExploitRemedyVendor
https://github.com/cloudreve/cloudreve/commit/f3347130ac48f2ff996af9ef66c97be2dda9cba9	[email protected]	Source CodeVendor
https://github.com/cloudreve/cloudreve/releases/tag/4.17.0	[email protected]	Release NotesVendor
https://github.com/cloudreve/cloudreve/security/advisories/GHSA-c3jm-gv5r-9wcp	[email protected]	AdvisoryExploitRemedyVendor

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-863	Incorrect Authorization	[email protected]

Affected Products

Product	Versions
Cloudreve	<= 4.16.1 (semver)
CPE cpe:2.3:a:cloudreve:cloudreve:::::::: Remediation Upgrade: 4.17.0moderate efforthttps://github.com/cloudreve/cloudreve/releases/tag/4.17.0

Change History

2 change records found show changes

Date	Action	Recorded By
Jul 31, 2026	CVE Modified	CISA-ADP
Jul 31, 2026	New CVE Received	[email protected]