Exploited vulnerability · CISA KEV

Is CVE-2026-110447 exploited? Yes: in CISA KEV since 23 Oct 2026

Gociux · Collabora Online – Built-in CODE Server · data: CISA KEV, CVE record, FIRST EPSS

Yes. CVE-2026-110447, Collabora Online – Built-in CODE Server OS Command Injection Vulnerability, is being exploited in the wild. CISA added it to its Known Exploited Vulnerabilities catalog on 23 Oct 2026, 9 days after it was published. It affects Collabora Online – Built-in CODE Server. If you run it, CISA's required action is: 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.

What it is

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.

What to do

1. Check whether you run it. Look for Collabora Online – Built-in CODE Server in your asset inventory, including appliances and cloud images. Stack check lists every exploited Collabora CVE at once.
2. Apply the fix. 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.
3. If you can't patch today, take the affected service off the internet or restrict who can reach it, and check its logs for signs of compromise since 14 Oct 2026.
4. Get told next time. Email alerts when CISA adds a CVE for Collabora.

References

• help.nextcloud.com/t/to-collabora-built-in-user-update-asap/250516
• github.com/CollaboraOnline/online/security/advisories/GHSA-g3vx-3m76-f
• nvd.nist.gov/vuln/detail/CVE-2026-110447

Sources: CISA KEV (exploitation, ransomware use, required action, due date), the CVE record (publication date, CVSS, CNA), NVD and FIRST EPSS (live score). More: all KEV additions in October 2026 · act-now radar.