Nextcloud Server 30.0.0 is vulnerable to an Insecure Direct Object Reference (IDOR) in the /core/preview endpoint. Any authenticated user can access previews of arbitrary files belonging to other users by manipulating the fileId parameter. This allows unauthorized disclosure of sensitive data, such as text files or images, without prior sharing permissions.
Metrics
Affected Vendors & Products
References
History
Sun, 14 Dec 2025 21:30:00 +0000
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Nextcloud
Nextcloud server |
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| Vendors & Products |
Nextcloud
Nextcloud server |
Fri, 12 Dec 2025 20:15:00 +0000
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| Metrics |
ssvc
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Fri, 12 Dec 2025 19:30:00 +0000
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| Weaknesses | CWE-639 | |
| Metrics |
cvssV3_1
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Fri, 12 Dec 2025 17:15:00 +0000
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| Description | Nextcloud Server 30.0.0 is vulnerable to an Insecure Direct Object Reference (IDOR) in the /core/preview endpoint. Any authenticated user can access previews of arbitrary files belonging to other users by manipulating the fileId parameter. This allows unauthorized disclosure of sensitive data, such as text files or images, without prior sharing permissions. | |
| References |
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Status: PUBLISHED
Assigner: mitre
Published: 2025-12-12T00:00:00.000Z
Updated: 2025-12-12T19:12:34.083Z
Reserved: 2025-10-27T00:00:00.000Z
Link: CVE-2025-64011
Updated: 2025-12-12T19:12:06.395Z
Status : Awaiting Analysis
Published: 2025-12-12T17:15:45.210
Modified: 2025-12-15T18:22:40.637
Link: CVE-2025-64011
No data.