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Fencer Intel
high 8.1

CVE-2026-8851 json

SOGo < 5.12.8 SQL Injection via addUserInAcls endpoint

published 5mo ago modified 3d ago also EUVD-2026-30804

cvss
8.1
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 24%
public exploits
0
none known

Summary

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.

Patch / fix

  • sogo Debian 12 5.8.0-2+deb12u3
  • sogo Debian 13 5.12.1-3+deb13u2

debian advisories DEBIAN-CVE-2026-8851

  • sogo Ubuntu Pro 16.04 LTS 2.2.17a-1.1ubuntu0.1~esm1
  • sogo Ubuntu Pro 18.04 LTS 3.2.10-1ubuntu0.1~esm1
  • sogo Ubuntu Pro 20.04 LTS 4.3.0-1ubuntu0.1~esm1
  • sogo Ubuntu Pro 22.04 LTS 5.5.1-1ubuntu0.1~esm1
  • sogo Ubuntu Pro 26.04 LTS 5.12.4-1.2ubuntu0.1~esm1

ubuntu advisories UBUNTU-CVE-2026-8851

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

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CISA SSVC

Exploitation
none
Automatable
no
Technical impact
total
Assessed
5mo ago

Exploit prediction

0.32% chance of exploitation in the next 30 days, higher than 24% of all scored CVEs (FIRST EPSS, 2026-11-11).

CVSS scores

assigned by version score vector
CNA 4.0 8.6 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
CNA 3.1 8.1 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
CNA 4.0 8.6 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Affected products

  • Alinto SOGo Webmail

Classification

Weakness
  • CWE-89 Improper Neutralization of Special Elements used in an SQL Command

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.