CVE-2026-18699
Improper Input Validation in MongoDB Query Planner Leads to Denial of Service
CVSS Score
6.5
EPSS Score
0.0%
EPSS Percentile
0th
An issue in MongoDB Server's query planner could allow an authenticated user with read-level privileges to cause the server process to terminate unexpectedly by submitting a specially formed query against a collection with a text index. This could result in a denial of service, affecting connected clients and in-flight operations.
| CWE | CWE-476 |
| 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:N/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Affected Versions
MongoDB / MongoDB Server
8.3.0 < 8.3.8 8.0 < 8.0.29 7.0 < 7.0.40