CVE-2026-45543
Nextcloud: Deleting a Forms collaborator share leaves uploaded response files accessible through a lingering Files share
- State
- Published
- Severity
- 5.3 Medium
- Published
- Jun 1, 2026
- Updated
- Jun 1, 2026
- Reserved
- May 12, 2026
Description
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 5.3 Medium | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N | GitHub_M |
Weaknesses
- CWE-552 Files or Directories Accessible to External Parties
Affected Products
| Product | Versions |
|---|---|
security-advisoriesnextcloud |
|
References
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