CVE-2026-96746
Medium
Description
An out-of-bounds write in the connection-monitoring logic of the MongoDB C Driver may allow an unauthenticated party who controls name resolution and the responses of the hosts named in a client's connection string to write beyond the end of a heap buffer. This may cause the application using the driver to terminate unexpectedly.
SeverityMedium
CVSS6.5
Exploit probability—
Product
C Driver
PublishedSep 24, 2026
First seenSep 24, 2026
Weakness typeCWE-787Out-of-bounds write
How to fix
Update
- MongoDB C Driver1.30.12, 2.5.5 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| MongoDB C Driver | v < 1.30.12, 2.0.0 ≤ v < 2.5.5 | 1.30.12, 2.5.5 |
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