SB2025120551 - Authorization bypass through user-controlled key in Nextcloud Tables
Published: December 5, 2025
Security Bulletin ID
SB2025120551
Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Authorization bypass through user-controlled key (CVE-ID: CVE-2025-66551)
The vulnerability allows a remote attacker to compromise the target system.
The vulnerability exists due to authorization bypass through user-controlled key. A remote user can create their own table and then move a column to a victims table.
Remediation
Install update from vendor's website.