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 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.
Scoring
- Severity
- MEDIUM
- CVSS base score
- 5.7
- CVSS vector
- CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
- CWE
- CWE-190
- Published
- 2026-09-10
- Last modified
- 2026-09-10
Affected products
- MongoDB C Driver
Weakness type
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