Auth bypass in Nextcloud Security-advisories
CVE-2025-66513
Nextcloud Tables allows you to create your own tables with individual columns. Prior to 0.8.9, 0.9.6, and 1.0.1, the information which table (numeric ID) is shared with which groups or users and the respective permissions was not limited t…
Vulnerability class: IDOR (Insecure Direct Object Reference)
EPSS: 0.002 (16.3th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N.
Affected products
- Nextcloud Security-advisories — versions >= 1.0.0-beta.1, < 1.0.1, >= 0.9.0-beta.1, < 0.9.6, < 0.8.9
- Nextcloud Tables
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM, Patch, Vendor Advisory)
- security-advisories@github.com (Patch, x_refsource_MISC, Issue Tracking)
- security-advisories@github.com (Patch, x_refsource_MISC)
- security-advisories@github.com (x_refsource_MISC, Issue Tracking, Vendor Advisory)
Frequently asked questions
- What is CVE-2025-66513?
- CVE-2025-66513 is a medium-severity vulnerability in Nextcloud Security-advisories, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 4.3/10. Published 2025-12-05.
- How severe is CVE-2025-66513?
- Medium severity. CVSS v3 base score is 4.3 out of 10.