CVE-2026-8851 HIGH

CVE-2026-8851: SOGo < 5.12.8 SQL Injection via addUserInAcls endpoint

Vendor Alinto
Product SOGo Webmail
Weakness CWE-89 · SQLi
Published May 18, 2026
Last update May 19, 2026

CVSS base score

8.6/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality
Integrity

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

May 18, 2026 CVE published
May 19, 2026 Record updated