CVE-2026-40551: CWE-603: Use of Client-Side Authentication in BinSoft mpGabinet
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.
AI Analysis
Technical Summary
CVE-2026-40551 is a high-severity vulnerability in BinSoft's mpGabinet product (version 23.12.19 and earlier) caused by the use of client-side authentication (CWE-603). Because authentication is handled on the client side, an attacker who can access the application instance can manipulate the binary to bypass login controls and authenticate as any user. This undermines the integrity of the authentication process and potentially grants unauthorized access to the backend server.
Potential Impact
Successful exploitation allows an attacker with local access to an application instance to bypass authentication and impersonate arbitrary users. This can lead to unauthorized access to sensitive data and functionality within the mpGabinet system. The vulnerability has a CVSS 4.0 base score of 8.4 (high severity), reflecting the ease of exploitation with low privileges and the high impact on confidentiality and integrity.
Mitigation Recommendations
Patch status is not yet confirmed — no official fix or remediation guidance is currently available from the vendor. Users should monitor the vendor's advisory for updates. Until a fix is released, restrict access to application instances and backend servers to trusted personnel only to reduce the risk of exploitation.
CVE-2026-40551: CWE-603: Use of Client-Side Authentication in BinSoft mpGabinet
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.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-40551 is a high-severity vulnerability in BinSoft's mpGabinet product (version 23.12.19 and earlier) caused by the use of client-side authentication (CWE-603). Because authentication is handled on the client side, an attacker who can access the application instance can manipulate the binary to bypass login controls and authenticate as any user. This undermines the integrity of the authentication process and potentially grants unauthorized access to the backend server.
Potential Impact
Successful exploitation allows an attacker with local access to an application instance to bypass authentication and impersonate arbitrary users. This can lead to unauthorized access to sensitive data and functionality within the mpGabinet system. The vulnerability has a CVSS 4.0 base score of 8.4 (high severity), reflecting the ease of exploitation with low privileges and the high impact on confidentiality and integrity.
Mitigation Recommendations
Patch status is not yet confirmed — no official fix or remediation guidance is currently available from the vendor. Users should monitor the vendor's advisory for updates. Until a fix is released, restrict access to application instances and backend servers to trusted personnel only to reduce the risk of exploitation.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- CERT-PL
- Date Reserved
- 2026-04-14T09:44:32.552Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 69f0b827cbff5d86101443f8
Added to database: 4/28/2026, 1:37:43 PM
Last enriched: 4/28/2026, 1:51:19 PM
Last updated: 4/29/2026, 1:57:21 AM
Views: 10
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