CyberRota Analysis
AI-GeneratedA vulnerability exists in Cloudreve versions prior to 4.18.0, where certain admin routes improperly inherit read permissions without enforcing write restrictions. This allows an attacker with read-only OAuth credentials to exploit the system by probing WOPI service endpoints and sending arbitrary emails via the server's SMTP configuration. Organizations using affected versions should prioritize upgrading to 4.18.0 to mitigate potential unauthorized access and misuse of their file management capabilities.
Public Exploit Signal
A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.
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Original NVD Description
Cloudreve is a self-hosted file management and sharing system. Prior to 4.18.0, tool.GET("wopi") and tool.POST("mail") in routers/router.go inherit ScopeAdminRead but omit the RequiredScopes(types.ScopeAdminWrite) middleware applied to neighboring state-changing admin tool routes. An OAuth application or API key limited to Admin.Read can therefore probe configured WOPI service endpoints and send arbitrary test email through the server SMTP configuration, exceeding the token's intended read-only authorization boundary. This issue is fixed in version 4.18.0.