Medium severity6.3NVD Advisory· Published Jul 31, 2026· Updated Sep 8, 2026
CVE-2026-62323
CVE-2026-62323
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.
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Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
github.com/cloudreve/Cloudreve/v4Go | < 4.0.0-20260626022433-f3347130ac48 | 4.0.0-20260626022433-f3347130ac48 |
github.com/cloudreve/Cloudreve/v3Go | <= 3.0.0-20250225100611-da4e44b77af4 | — |
Affected products
2- osv-coordsRange: < 0.0.20260827T195228-160000.1.1
Patches
Vulnerability mechanics
References
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