Vulnerability · Published Feb 10, 2026 · Assigned by mongodb
CVE-2026-1850An authorized user may disable the MongoDB server by issuing a certain type of complex query due to boolean expression simplification
Medium 6.5
In plain English
A medium-severity resource allocation without limits in MongoDB Server from MongoDB Inc. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 21% of all known vulnerabilities).
Severity (CVSS 3.1)6.5Medium
Exploit odds (30 days)0.3%top 78.5% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Complex queries can cause excessive memory usage in MongoDB Query Planner resulting in an Out-Of-Memory Crash.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| MongoDB Inc | MongoDB Server | 8.0 – before 8.0.188.2 – before 8.2.4 |
Weakness: CWE-770 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H