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CVE-2025-64011

4.3 medium SSVC exploitation: none Analyzed
NVD · CVE.org

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.

Fix

Nothing published yet: no patch, vendor advisory or mitigation reference on NVD, no vendor advisory in the News for this CVE, not in CISA's KEV, no fixed package version. BaselineWatch does not guess at one.

Change history 1

  1. First seenCVSS 4.3 · nextcloudNVD modified 2026-10-14 17:10

Affected (CPE criteria) 1

  • cpe:2.3:a:nextcloud:nextcloud_server:30.0.0:-:*:*:*:*:*:*

References 3