CVE-2026-8851

SOGo < 5.12.8 SQL Injection via addUserInAcls endpoint

State: Published
Severity: 8.6 High
Published: May 18, 2026
Updated: May 19, 2026
Reserved: May 18, 2026

Description

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.

Scores

CVSS	Score	Vector	Source
4.0	8.6 High	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	VulnCheck
3.1	8.1 High	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N	VulnCheck

Weaknesses

CWE-89 Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')

Affected Products

Product	Versions
SOGo WebmailAlinto	5.12.8Not affected 5.12.7 and earlierAffected

References

https://github.com/Alinto/sogo/releases/tag/SOGo-5.12.8issue-tracking
https://www.sogo.nu/news/2026/sogo-v5128-released.htmlpatch
https://www.vulncheck.com/advisories/sogo-sql-injection-via-adduserinacls-endpointthird-party-advisory

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