CISA description
Collabora Collabora Online – Built-in CODE Server when used within the NextCloud platform contains an OS command injection vulnerability that allows for remote code execution when the CODE server isn't running.
CVE-2026-110447
Collabora · Collabora Online – Built-in CODE Server
Collabora Online – Built-in CODE Server OS Command Injection Vulnerability
Required action
Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.
Notes & references
- https://help.nextcloud.com/t/to-collabora-built-in-user-update-asap/250516
- https://github.com/CollaboraOnline/online/security/advisories/GHSA-g3vx-3m76-fghh
- BOD 26-04: https://www.cisa.gov/news-events/directives/bod-26-04-prioritizing-security-updates-based-risk
- Forensics Triage Requirements: https://www.cisa.gov/news-events/directives/bod-26-04-implementation-guidance-prioritizing-security-updates-based-risk
- https://nvd.nist.gov/vuln/detail/CVE-2026-110447
Where this lands in 800-53
Vulnerability data triggers these controls during assessment and continuous monitoring.