CyberRota Analysis
AI-GeneratedThe Grav web platform's Login plugin prior to version 3.8.5 is vulnerable due to the lack of nonce validation on the twofa_cancel task, allowing unauthenticated users to manipulate the _redirect field. This can lead to phishing attacks by redirecting users to external sites from a trusted Grav host. Organizations using affected versions of Grav should prioritize updating to 3.8.5 to mitigate this risk.
Public Exploit Signal
A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.
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Original NVD Description
Grav is a file-based Web platform. Prior to 3.8.5, the Login plugin twofa_cancel task accepts a client-controlled _redirect field without a nonce and allows an unauthenticated request to set an external http, https, or protocol-relative Location target. Controller::execute() applies the field when taskTwofa_cancel() sets no redirect, and Grav::getRedirectResponse() accepts the target through Uri::isExternal(), enabling phishing redirects from a trusted Grav host. This issue is fixed in version 3.8.5.