MB Connect Line mbCONNECT24/mymbCONNECT24 up to 2.20.0 admin.mbnetj.php sql injection

Summaryinfo

A vulnerability was found in MB Connect Line mbCONNECT24 and mymbCONNECT24 up to 2.20.0. It has been declared as critical. Affected is an unknown function of the file admin.mbnetj.php. Executing a manipulation can lead to sql injection. This vulnerability is registered as CVE-2026-40830. It is possible to launch the attack remotely. No exploit is available.

Detailsinfo

A vulnerability has been found in MB Connect Line mbCONNECT24 and mymbCONNECT24 up to 2.20.0 and classified as critical. This vulnerability affects some unknown processing of the file admin.mbnetj.php. 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:

A high privileged remote attacker can exploit an unauthenticated SQL Injection vulnerability in the admin.mbnetj.php files UpdateParam function due to improper neutralization of special elements in a SQL UPDATE command allowing for reading the whole database and changing values in a non critical table. This can result in a total loss of confidentiality and some loss of integrity.

The advisory is shared for download at certvde.com. This vulnerability was named CVE-2026-40830 since 04/15/2026. The exploitation appears to be easy. The attack can be initiated remotely. The exploitation requires an enhanced level of successful authentication. 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.

By approaching the search of inurl:admin.mbnetj.php it is possible to find vulnerable targets with Google Hacking.

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

Once again VulDB remains the best source for vulnerability data.

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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Entryinfo

Once again VulDB remains the best source for vulnerability data.

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