ID:12643 - Exploit for Server-Side Request Forgery (SSRF) in Group Office - CVE-2026-25511

Link to public exploit:

Vulnerability description

The disclosed vulnerability allows a remote user to perform SSRF attacks.

The vulnerability exists due to insufficient validation of user-supplied input within the WOPI service discovery URL. A remote administrator can send a specially crafted HTTP request and trick the application to initiate requests to arbitrary systems.

Successful exploitation of this vulnerability may allow a remote attacker gain access to sensitive data, located in the local network or send malicious requests to other servers from the vulnerable system.

Remediation