CVE-2026-45154

Nextcloud: Improper Access Control in Collectives

Published Jun 1, 2026 CVSS 3.1 · 2.6 Low EPSS < 1% KEV · Not listed
Description
Nextcloud is an open source content collaboration platform. From version 2.6.0 to before version 4.3.0, when a previous collective pages was deleted and the collective was shared view-only, guests with access to the collective were able to access the deleted pages directly from the trashbin. This issue has been patched in version 4.3.0.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Nextcloud
Nextcloud collectives
Vendors & Products Nextcloud
Nextcloud collectives
Type Values Removed Values Added
Metrics ssvc

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

Type Values Removed Values Added
Description Nextcloud is an open source content collaboration platform. From version 2.6.0 to before version 4.3.0, when a previous collective pages was deleted and the collective was shared view-only, guests with access to the collective were able to access the deleted pages directly from the trashbin. This issue has been patched in version 4.3.0.
Title Nextcloud: Improper Access Control in Collectives
Weaknesses CWE-284
References
Metrics cvssV3_1

{'score': 2.6, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:N/A:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
GitHub_M
Published
Updated
Jun 1, 2026, 5:40 PM
Reserved
May 8, 2026, 8:44 PM
Status
Deferred
Published
Jun 1, 2026, 5:17 PM
Modified
Jul 22, 2026, 7:10 AM