CVE-2026-104004
Medium
Description
MongoDB Server's collection validation feature may not properly handle certain expressions stored in a validator. In some cases, this can cause the server process to stop running when a document is later inserted. The behavior can occur for authenticated users with write access.
SeverityMedium
CVSS6.5
Exploit probability—
Product
MongoDB Server
PublishedOct 13, 2026
First seenOct 13, 2026
Weakness typeCWE-476NULL pointer dereference
How to fix
Update
- MongoDB MongoDB Server8.3.13, 8.0.34, 9.0.4 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| MongoDB MongoDB Server | 8.3.0 ≤ v < 8.3.13, 8.0 ≤ v < 8.0.34, 9.0 ≤ v < 9.0.4 | 8.3.13, 8.0.34, 9.0.4 |
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