CVE-2026-18690
Improper Authorization in MongoDB Server Allows Unauthorized Actions on System Collections
CVSS Score
8.1
EPSS Score
0.0%
EPSS Percentile
0th
An issue in MongoDB Server could allow an authenticated user with a limited database-scoped role to perform an action against protected system collections that their assigned privileges should not permit. This could result in critical system collections being dropped and recreated without proper authorization.
| CWE | CWE-863 |
| Vendor | mongodb |
| Product | mongodb server |
| Ecosystems | |
| Industries | Technology |
| Published | Aug 11, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
High
Affected Versions
MongoDB / MongoDB Server
8.3.0 < 8.3.8 8.0 < 8.0.29 7.0 < 7.0.40