CVE-2026-45282
June 2, 2026, 2 p.m.
6.5
Medium
Description
Nextcloud is an open source content collaboration platform. In Nextcloud Server from versions 32.0.0 to before 32.0.9, and 33.0.0 to before 33.0.3, an authenticated attacker can access attachments of link shares when knowing the share token, circumventing password protection or download restrictions. It is applicable to any file that is shared directly, as the attacker only needs to know a documentId they own, apart of the mentioned share token. For shared folders the attacker has to know or guess a documentId of a file that is included inside the folder, making it much harder to exploit. The attacker can only extract an attachments, but not the file shared file or folder itself. It is recommended that the Nextcloud Server is upgraded to 33.0.3 or 32.0.9. It is recommended that the Nextcloud Enterprise Server is upgraded to 33.0.3, 32.0.9, 31.0.14.5, 30.0.17.9, 29.0.16.16, 28.0.14.17 or 27.1.11.5
Product(s) Impacted
| Vendor | Product | Versions |
|---|---|---|
| Nextcloud |
|
|
Weaknesses
Common security weaknesses mapped to this vulnerability.
CWE-284
Improper Access Control
The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.
*CPE(s)
Affected systems and software identified for this CVE.
| Type | Vendor | Product | Version | Update | Edition | Language | Software Edition | Target Software | Target Hardware | Other Information |
|---|---|---|---|---|---|---|---|---|---|---|
| a | nextcloud | nextcloud_server | 32.0.0-32.0.9 | / | / | / | / | / | / | / |
| a | nextcloud | nextcloud_server | 33.0.0-33.0.3 | / | / | / | / | / | / | / |
| a | nextcloud | nextcloud_enterprise_server | 33.0.3 | / | / | / | / | / | / | / |
| a | nextcloud | nextcloud_enterprise_server | 32.0.9 | / | / | / | / | / | / | / |
| a | nextcloud | nextcloud_enterprise_server | 31.0.14.5 | / | / | / | / | / | / | / |
| a | nextcloud | nextcloud_enterprise_server | 30.0.17.9 | / | / | / | / | / | / | / |
| a | nextcloud | nextcloud_enterprise_server | 29.0.16.16 | / | / | / | / | / | / | / |
| a | nextcloud | nextcloud_enterprise_server | 28.0.14.17 | / | / | / | / | / | / | / |
| a | nextcloud | nextcloud_enterprise_server | 27.1.11.5 | / | / | / | / | / | / | / |
Tags
CVSS Score
CVSS Data - 3.1
- Attack Vector: NETWORK
- Attack Complexity: LOW
- Privileges Required: LOW
- Scope: UNCHANGED
- Confidentiality Impact: HIGH
- Integrity Impact: NONE
- Availability Impact: NONE
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Timeline
Published: June 1, 2026, 7:16 p.m.
Last Modified: June 2, 2026, 2 p.m.
Last Modified: June 2, 2026, 2 p.m.
Status : Undergoing Analysis
CVE has been recently published to the CVE List and has been received by the NVD.
More infoSource
*Disclaimer: Some vulnerabilities do not have an associated CPE. To enhance the data, we use AI to infer CPEs based on CVE details. This is an automated process and might not always be accurate.