CVE-2026-18696

HIGH CVSS 4.0: 7.0 EPSS 0.29%
Updated Aug 12, 2026
MongoDB
Parameter Value
CVSS 7.0 (HIGH)
Type CWE-863 (Incorrect Authorization)
Vendor MongoDB
Public PoC No

An issue in MongoDB Server's applyOps command could allow an authenticated user with specific non-default privileges to perform certain data-definition operations, such as dropping or modifying collections, against collections they do not have permission to manipulate. This is due to an inconsistency in how the target collection is determined between the authorization check and the actual operation.

Attack Parameters

Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Attack Requirements
None
No additional conditions
Privileges Required
High
Admin privileges needed
User Interaction
None
No user interaction needed

Impact Assessment

Confidentiality
None
No data leak
Integrity
High
Complete data modification
Availability
High
Complete denial of service

CVSS Vector v4.0