Nextcloud vulnerabilities and fixes

CVEs that mention Nextcloud, ranked by priority. 1 tracked.

Nextcloud has 1 tracked vulnerability, 1 critical and 1 exploited in the wild (CISA KEV). A fixed release or vendor patch exists for 1. Most recent: 2026-10-14. Highest priority: CVE-2026-110447 (score 86/100).

• CVE-2026-110447 CRITICAL 9.2 EXPLOITED MITIGATE Collabora Online – Built-in CODE Server OS Command Injection Vulnerability

FAQ

How do I fix Nextcloud vulnerabilities?

Open the CVE for your version, check the affected range, then follow the listed action: upgrade to the fixed release, or downgrade or mitigate if no fix exists yet. Commands for each OS are shown on every CVE page.

Is Nextcloud being exploited right now?

Yes: 1 Nextcloud CVE is on the CISA Known Exploited Vulnerabilities list, so patch it first.

Which Nextcloud CVE should I patch first?

CVE-2026-110447 currently ranks highest (86/100): Collabora Online – Built-in CODE Server OS Command Injection Vulnerability.

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