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.

Attack Vector Network

Attack Complexity Low

Privileges Required High

Attack Requirements None

User Interaction Passive

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact Low

Vulnerable System Availability Impact High

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact Low

Subsequent System Availability Impact High

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Koozali SME Server unaffected
Version Status Constraints
11.0rc1-215 affected —

No data.

No data.

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Project Subscriptions

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Advisories

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Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://digitalcanion.com/en/security-research/#vendor=koozali cve-icon cve-icon
History

Mon, 19 Oct 2026 05:30:00 +0000

Type Values Removed Values Added
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.
Title Koozali - SME Server Improper Input Validation in domain Creation Leads to Denial of Service
Weaknesses CWE-20
CWE-400
CWE-96
References
Metrics cvssV4_0

{'score': 6.9, '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'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: NCSC.ch

Published:

Updated: 2026-10-19T05:13:04.459Z

Reserved: 2026-10-09T14:16:12.766Z

Link: CVE-2026-108121

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-10-19T06:17:22.163

Modified: 2026-10-19T06:17:22.163

Link: CVE-2026-108121

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-19T06:30:06Z

Weaknesses