MB Connect Line mbCONNECT24/mymbCONNECT24 up to 2.20.0 VerifyCreateLicences sql injection

Summaryinfo

A vulnerability was found in MB Connect Line mbCONNECT24 and mymbCONNECT24 up to 2.20.0 and classified as critical. Affected by this vulnerability is the function VerifyCreateLicences. Executing a manipulation can lead to sql injection. This vulnerability is tracked as CVE-2026-40840. The attack can be launched remotely. No exploit exists.

Detailsinfo

A vulnerability was found in MB Connect Line mbCONNECT24 and mymbCONNECT24 up to 2.20.0. It has been declared as critical. This vulnerability affects the function VerifyCreateLicences. The manipulation with an unknown input leads to a sql injection vulnerability. The CWE definition for the vulnerability is CWE-89. The product constructs all or part of an SQL command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended SQL command when it is sent to a downstream component. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

An low privileged remote attacker can exploit an unauthenticated SQL Injection vulnerability in the VerifyCreateLicences function due to improper neutralization of special elements in a SQL SELECT command. This can result in a total loss of confidentiality.

The advisory is shared for download at certvde.com. This vulnerability was named CVE-2026-40840 since 04/15/2026. The exploitation appears to be easy. The attack can be initiated remotely. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 05/27/2026). The MITRE ATT&CK project declares the attack technique as T1505.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Vendor

• MB Connect Line

Name

• mbCONNECT24
• mymbCONNECT24

Version

• 2.0
• 2.1
• 2.2
• 2.3
• 2.4
• 2.5
• 2.6
• 2.7
• 2.8
• 2.9
• 2.10
• 2.11
• 2.12
• 2.13
• 2.14
• 2.15
• 2.16
• 2.17
• 2.18
• 2.19
• 2.20.0

License

• open-source

CPE 2.3info

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CPE 2.2info

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