Home/CVE/mpGabinet performs client-side authentication. An attacker with access to any application instance connected to the back
CVE

CVE-2026-40551

mpGabinet performs client-side authentication. An attacker with access to any application instance connected to the back

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.

EPSS 0.00027
Monitor
  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-603Use of Client-Side Authentication
▣

Scoring & Timeline

Published to NVD28 Apr 2026 · 02:16 PM
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
no
Technical impact
total
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
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References & Sources

2
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://cert.pl/posts/2026/04/CVE-2026-40550/
https://www.mpgabinet.pl/
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