CVE-2026-40551 | THREATINT

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.

PUBLISHED Reserved 2026-04-14 | Published 2026-04-28 | Updated 2026-04-28 | Assigner CERT-PL

HIGH: 8.4CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N

Problem types

CWE-603: Use of Client-Side Authentication

Product status

Default status

affected

Any version

affected

Credits

Robert Kruczek finder

Kamil Szczurowski finder

References

cert.pl/posts/2026/04/CVE-2026-40550/ third-party-advisory

www.mpgabinet.pl/ product

cve.org (CVE-2026-40551)

nvd.nist.gov (CVE-2026-40551)

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