medium4.7
CVE-2026-88035
A size check in the client-side authentication path of the MongoDB C Driver can wrap around, so an unusually large user-name value is accepted and copied past …
Impact
A size check in the client-side authentication path of the MongoDB C Driver can wrap around, so an unusually large user-name value is accepted and copied past the end of a small buffer. A party able to set the driver's connection settings may cause the application that embeds the driver to terminate unexpectedly. Reaching this code requires a build in which the optional external SASL authentication backend is present and a connection configured to use it.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Mongodb | C Driver | from 1.10.0 before 1.30.10 from 2.2.0 before 2.5.3 |