CVE-2025-66551
Unknown Unknown - Not Provided
BaseFortify

Publication date: 2025-12-05

Last updated on: 2025-12-09

Assigner: GitHub, Inc.

Description
Nextcloud Tables allows you to create your own tables with individual columns. Prior to 0.8.6 and 0.9.3, a malicious user was able to create their own table and then move a column to a victims table. This vulnerability is fixed in 0.8.6 and 0.9.3.
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Meta Information
Published
2025-12-05
Last Modified
2025-12-09
Generated
2026-06-16
AI Q&A
2025-12-05
EPSS Evaluated
2026-06-15
NVD
CVE-2025-66551
Affected Vendors & Products
Showing 2 associated CPEs
Vendor Product Version / Range
nextcloud tables From 0.4.0 (inc) to 0.8.6 (exc)
nextcloud tables From 0.9.0 (inc) to 0.9.3 (exc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-639 The system's authorization functionality does not prevent one user from gaining access to another user's data or record by modifying the key value identifying the data.
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Executive Summary

This vulnerability in Nextcloud Tables allowed a malicious user to create their own table and then move a column into another user's table, potentially altering data in the victim's table. It affects versions prior to 0.8.6 and 0.9.3 and has been fixed in those versions.

Impact Analysis

The vulnerability can impact you by allowing an attacker with limited privileges to modify data in another user's table, potentially leading to data integrity issues or unauthorized data manipulation.

Mitigation Strategies

Update Nextcloud Tables to version 0.8.6 or 0.9.3 or later, as these versions contain the fix for this vulnerability.

Compliance Impact

This vulnerability allows unauthorized modification of another user's data by moving columns between tables without proper authorization checks. While it does not impact data confidentiality, it poses a high integrity risk by enabling unauthorized data modification. Such integrity violations can affect compliance with standards like GDPR and HIPAA, which require protecting data integrity and preventing unauthorized data alterations. Therefore, organizations using vulnerable versions of Nextcloud Tables may face compliance risks related to data integrity requirements under these regulations. [3]

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