Nextcloud security vulnerabilities
Open-source infrastructure. Public CVE monitoring for Nextcloud. Vendor security advisories are linked on this page.
Built for Operators of this product.
185 public records · 0 security-fix timeline events. 13 published in the last 7 days. 33 store a version range.
What you can do here
Current vulnerabilities
KEV-first priority plus newest publications for this stack.
Verified security fixes
Timeline events and, for Odoo, Community Git patch evidence — not keyword-only guesses.
Monitoring
Watch this technology from your account when you want alerts on new matches.
Patch intelligence
Use version checkers and advisory links to confirm upgrades before you change production.
- Critical 1
- High 2
- Medium 5
- Low 3
2026-08-0611 issues2026-11-03
Known exploited
View all known exploited- Critical9.2Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')Patch nowKEVEPSS 73.31%Oct 13, 2026
- Critical9.8ownCloud Improper Authentication VulnerabilityPatch nowKEVEPSS 43.19%Nov 21, 2023
- Medium5.3ownCloud guests Exposure of Sensitive Information to an Unauthorized ActorPatch nowKEVEPSS 0.95%Nov 5, 2025
- High7.5ownCloud graphapi Information Disclosure VulnerabilityPatch nowKEVEPSS 77.75%Nov 21, 2023
Recently published
Browse catalog- Critical9.2Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')Patch nowKEVEPSS 73.31%Oct 13, 2026
- Medium6.8Nextcloud is an open source content collaboration platform.Check if you run itEPSS 0.25%Jun 1, 2026
- High7.1Nextcloud is an open source content collaboration platform.Check if you run itEPSS 0.30%Jun 1, 2026
- Medium5.9Nextcloud is an open source content collaboration platform.Check if you run itEPSS 0.29%Jun 1, 2026
- Medium5.9Nextcloud is an open source content collaboration platform.Check if you run itEPSS 0.29%Jun 1, 2026
- High8.2Nextcloud is an open source content collaboration platform.Check if you run itEPSS 0.32%Jun 1, 2026
- Medium4.3Nextcloud is an open source content collaboration platform.Check if you run itEPSS 0.22%Jun 1, 2026
- Medium5.3Nextcloud is an open source content collaboration platform.Check if you run itEPSS 0.27%Jun 1, 2026
- Medium4.3Nextcloud is an open source content collaboration platform.Check if you run itEPSS 0.28%Jun 1, 2026
- Medium6.4Nextcloud is an open source content collaboration platform.Check if you run itEPSS 0.29%Jun 1, 2026