CVE-2026-45543
Nextcloud: Deleting a Forms collaborator share leaves uploaded response files accessible through a lingering Files share
CVSS Score
5.3
EPSS Score
0.0%
EPSS Percentile
0th
Nextcloud is an open source content collaboration platform. From version 4.3.0 to before version 5.2.7, a removed collaborator retains unauthorized read access to uploaded respondent files for the affected form. The scope is limited to uploaded files for forms where that user previously had results access. This issue has been patched in version 5.2.7.
| CWE | CWE-552 |
| Vendor | nextcloud |
| Product | security-advisories |
| Published | Jun 1, 2026 |
| Last Updated | Jun 1, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
None
Affected Versions
nextcloud / security-advisories
>= 4.3.0, < 5.2.7