Vulnerability · Published Oct 19, 2026 · Assigned by NCSC.ch
CVE-2026-108121Koozali - SME Server Improper Input Validation in domain Creation Leads to Denial of Service
Medium 6.9
In plain English
A medium-severity improper input validation in SME Server from Koozali. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 24% of all known vulnerabilities).
Official description
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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Koozali | SME Server | 11.0rc1-215 |
Weakness: CWE-20, CWE-96, CWE-400 · Vector: 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