CVE-2026-8851Network attack vector

Authenticated database extraction via ACL SQL injection

Published May 18, 2026 · Updated May 18, 2026

SQL injection in SOGo 5.12.7 and earlier allows remote authenticated users to extract arbitrary database data through ACL requests. The addUserInAcls endpoint incorporates the uid parameter as SQL subqueries and lets injected results be written to sogo_acl and read through /acls. A valid account is required; successful exploitation exposes database contents and can modify ACL-table data without interrupting the service.

CVSS severity8.6
High
EPSS probability0.32%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

SQL injection in SOGo 5.12.7 and earlier allows remote authenticated users to extract arbitrary database data through ACL requests. The addUserInAcls endpoint incorporates the uid parameter as SQL subqueries and lets injected results be written to sogo_acl and read through /acls. A valid account is required; successful exploitation exposes database contents and can modify ACL-table data without interrupting the service.

The record

CVE
CVE-2026-8851
Published
May 18, 2026
Updated
May 18, 2026
Vendor
Alinto
Product
SOGo
Classifications
CWE-89, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. May 18, 2026CVE publishedPublication date reported by the CVE source.
  2. May 18, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=5.12.7

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Alinto · SOGoversion=5.12.7

Published CVSS scores

8.1VulnCheckCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
8.6VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-89Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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