Medium 6.9Published Oct 19, 2026

CVE-2026-108121Koozali - SME Server Improper Input Validation in domain Creation Leads to Denial of Service

Updated under an hour ago (2026-10-19 08:40 UTC)

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It affects Koozali SME Server. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for Koozali SME Server

Exploited in the last 30 days

Brian Mariani from DigitalCanion SA has discovered a vulnerability in the domain creation functionality of koozali's SME Server version 11.0rc1-215, allowing an attacker with high privileges to inject reserved Apache configuration directives, corrupting httpd.conf and preventing Apache from starting after a server reboot, resulting in a denial-of-service (DoS) condition affecting the web server and its hosted virtual hosts.

CVSS: 6.9 MEDIUM (v4.0, CNA)CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:N/VI:L/VA:H/SC:N/SI:L/SA:H/E:P/S:P/AU:Y/R:A/RE:M/U:Amber
Weakness (CWE): CWE-20, CWE-96, CWE-400
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: NCSC.ch
NVD analysis: Received
Record last updated: Oct 19, 2026
First seen by InfoSec Signals: Oct 19, 2026

Affected products

Affected products

Koozali SME Server koozali:sme_server (from the name)	11.0rc1-215	CNA record

References

https://digitalcanion.com/en/security-research/#vendor=koozali

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.