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.
Published: 2026-10-19
Score: 6.9 Medium
EPSS: < 1% Very Low
KEV: No
Impact: Denial of Service on web server and virtual hosts
Action: Apply Patch
AI Analysis

Impact

The vulnerability allows an attacker with high privileges to inject reserved Apache configuration directives during domain creation, corrupting httpd.conf and preventing Apache from starting after a reboot. This results in a denial of service of the web server and any hosted virtual hosts.

Affected Systems

Koozali SME Server version 11.0rc1-215.

Risk and Exploitability

The CVSS score of 6.9 indicates medium severity. EPSS data is not available, so the exact likelihood of exploitation cannot be quantified, but the vulnerability is not listed in the CISA KEV catalog. Exploitability requires high privileges to create a domain, suggesting that it is a local privilege escalation or privileged user scenario. If an attacker gains such privileges, this flaw can stop Apache from starting after a reboot, causing persistent downtime for the affected services.

Generated by OpenCVE AI on October 19, 2026 at 06:23 UTC.

Remediation

No solution or workaround provided in the CVE record.

OpenCVE Recommended Actions

  • Upgrade SME Server to the latest version that contains the fix for this issue, or apply the vendor-provided patch if available.
  • Restrict access to the domain creation interface to trusted administrators only, ensuring that only users with legitimate needs can create domains and modify Apache configuration.
  • Implement integrity checks or automated backups for httpd.conf before changes, and have a rapid recovery strategy for restarting Apache in case of configuration corruption.

Generated by OpenCVE AI on October 19, 2026 at 06:23 UTC.

Tracking

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Advisories

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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'}

Subscriptions

No data.

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
  • CWE-20

    Improper Input Validation

  • CWE-400

    Uncontrolled Resource Consumption

  • CWE-96

    Improper Neutralization of Directives in Statically Saved Code ('Static Code Injection')