Vulnerability Report

CVE-2025-66553

Title: Nextcloud Tables Information Disclosure

Auth Bypass

Proof Of Concept

No public PoC currently indexed for CVE-2025-66553.

CWE Category CWE-639

Published Date Dec 05, 2025

Modified Date Oct 15, 2026

Exploit Status Not Found

Score 4.3 CVSS v3.1

Exploit Probability (EPSS)

0.28%

Vulnerability Summary

CVE-2025-66553: 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.

Impacted Vendors

nextcloud 1

Reference Links

https://github.com/nextcloud/security-advisories/security/advisories/GHSA-p53h-6294-crjw https://github.com/nextcloud/tables/commit/e975f5bfedb6922f04cdd236cde4e26067fe064e https://github.com/nextcloud/tables/pull/1891 https://hackerone.com/reports/3138721

CVSS v3.1

Source Entity [email protected]

Severity MEDIUM

4.3

Attack Vector

NETWORK

Complexity

LOW

Privileges

N/A

Interaction

NONE

Confidentiality

N/A

Integrity

N/A

Availability

N/A

Scope

UNCHANGED

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

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2025-66553 Exploits & PoCs (Proof Of Concept)

No public PoCs found in our database for this CVE.

October 15, 2026 MODIFIED

Vulnerability data updated via NVD.

December 09, 2025 MODIFIED

Vulnerability data or affected products updated.

December 09, 2025 MODIFIED

Vulnerability data updated via NVD.

December 05, 2025 PUBLISHED

Vulnerability first announced in NVD.

Attack Vector Matrix

Access Vector NETWORK

Complexity LOW

Privileges N/A

Interaction NONE

CVSS Vector String


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

Affected Stack

No specific products linked.