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.
History

Tue, 02 Jun 2026 16:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Mon, 01 Jun 2026 19:00:00 +0000

Type Values Removed Values Added
Description 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.
Title Nextcloud: Wrong condition in the User OIDC app's LdapService allowed deleted LDAP users to authenticate
Weaknesses CWE-284
References
Metrics cvssV3_1

{'score': 4.6, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:L'}


cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-06-02T15:22:21.264Z

Reserved: 2026-05-11T18:41:13.158Z

Link: CVE-2026-45284

cve-icon Vulnrichment

Updated: 2026-06-02T15:22:06.291Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-06-01T19:16:50.670

Modified: 2026-06-02T14:00:31.067

Link: CVE-2026-45284

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-06-01T20:45:25Z