CVE-2026-40551

Description

mpGabinet performs client-side authentication. An attacker with access to any application instance connected to the backend server can bypass the login verification process by manipulating the application binary and authenticate as an arbitrary user. This issue affects mpGabinet version 23.12.19 and below.

References

• https://cert.pl/posts/2026/04/CVE-2026-40550/
• https://www.mpgabinet.pl/