Alinto SOGo up to 5.12.7 addUserInAcls Endpoint /acls sogo_acl uid sql injection

Summaryinfo

A vulnerability categorized as critical has been discovered in Alinto SOGo up to 5.12.7. Impacted is the function sogo_acl of the file /acls of the component addUserInAcls Endpoint. The manipulation of the argument uid results in sql injection. This vulnerability is reported as CVE-2026-8851. The attack can be launched remotely. No exploit exists. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, was found in Alinto SOGo up to 5.12.7. Affected is the function sogo_acl of the file /acls of the component addUserInAcls Endpoint. The manipulation of the argument uid with an unknown input leads to a sql injection vulnerability. CWE is classifying the issue as 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. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

SOGo versions 5.12.7 and prior contains a SQL injection vulnerability in the Access Control List management functionality that allows authenticated users to extract arbitrary data from the database by injecting SQL subqueries through the uid parameter of the addUserInAcls endpoint. Attackers can inject malicious SQL code to write extracted data into the sogo_acl table and retrieve it through the /acls API, establishing an out-of-band data exfiltration channel.

The weakness was disclosed by Dninh. The advisory is shared for download at github.com. This vulnerability is traded as CVE-2026-8851 since 05/18/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1505.

The vulnerability scanner Nessus provides a plugin with the ID 315314 (Linux Distros Unpatched Vulnerability : CVE-2026-8851), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 5.12.8 eliminates this vulnerability. The upgrade is hosted for download at github.com.

The vulnerability is also documented in the vulnerability database at Tenable (315314). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Vendor

• Alinto

Name

• SOGo

Version

• 5.12.0
• 5.12.1
• 5.12.2
• 5.12.3
• 5.12.4
• 5.12.5
• 5.12.6
• 5.12.7

Website

• Product: https://github.com/Alinto/sogo/

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VulDB is the best source for vulnerability data and more expert information about this specific topic.

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