What is the CVSS score of CVE-2025-66553?

CVE-2025-66553 has a CVSS 3.1 base score of 4.3 (Medium). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N. EPSS exploitation probability: 0.0%.

Which versions of Tables are affected by CVE-2025-66553?

Organizations using Nextcloud Tables should be aware of moderate risk from CVE-2025-66553, a IDOR vulnerability rated CVSS 4.3. Exploitation could compromise the security of affected deployments.. A patch is available.

How to fix or mitigate CVE-2025-66553?

Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Vendor patch is available.

Tables CVE-2025-66553

EUVD-2025-201430 MEDIUM

Authorization Bypass Through User-Controlled Key (CWE-639)

2025-12-05 security-advisories@github.com

Authentication Bypass Tables Nextcloud

4.3

CVSS 3.1 · GitHub Advisory

Severity by source

GitHub Advisory PRIMARY

4.3 MEDIUM

AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Primary rating from GitHub Advisory · only source for this CVE.

CVSS VectorGitHub Advisory

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

None

Lifecycle Timeline

EUVD ID Assigned

Mar 15, 2026 - 17:08 euvd

EUVD-2025-201430

Analysis Generated

Mar 15, 2026 - 17:08 vuln.today

Patch released

Mar 15, 2026 - 17:08 nvd

Patch available

CVE Published

Dec 05, 2025 - 18:15 nvd

MEDIUM 4.3

DescriptionGitHub Advisory

Nextcloud Tables allows you to create your own tables with individual columns. Prior to 0.8.7 and 0.9.4, authenticated users were able to view meta data of columns in other tables of the Tables app by modifying the numeric ID in a request. This vulnerability is fixed in 0.8.7 and 0.9.4.