CVE-2026-106428
Low
Description
An out-of-bounds read in SCRAM authentication response parsing in the MongoDB C Driver can read one byte beyond a fixed-size buffer when processing a malformed server-final message. A server or network intermediary able to provide this message before server-signature verification can cause the application using the driver to terminate. The extra byte is not returned through the protocol.
SeverityLow
CVSS3.7
Exploit probability—
Product
C Driver
PublishedOct 8, 2026
First seenOct 8, 2026
Weakness typeCWE-125Out-of-bounds read
How to fix
Update
- MongoDB C Driver1.30.13, 2.4.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| MongoDB C Driver | 1.1.0 ≤ v < 1.30.13, 2.0.0 ≤ v < 2.4.0 | 1.30.13, 2.4.0 |
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