Vulnerability Details CVE-2026-45284
Nextcloud is an open source content collaboration platform. From version 1.3.6 to before version 8.4.0, an improper check allowed users that where provided by LDAP to still authenticate towards user OIDC after they where deleted. This issue has been patched in version 8.4.0.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.0
EPSS Ranking 8.6%
CVSS Severity
CVSS v3 Score 4.6
Products affected by CVE-2026-45284
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cpe:2.3:a:nextcloud:user_oidc:5.0.0
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cpe:2.3:a:nextcloud:user_oidc:6.0.0
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cpe:2.3:a:nextcloud:user_oidc:6.1.0