Vulnerability Description
A 32-bit integer wraparound in the MongoDB C Driver's Windows-only Kerberos/SSPI authentication code can cause an undersized heap buffer to be allocated when an excessively long credential value is supplied in the client's connection configuration. A party able to control that client-side configuration, in conjunction with the affected authentication mechanism, can cause the driver to write outside the bounds of the allocated buffer. This may result in corruption of client process memory and denial of service of the client application. The issue affects only client builds compiled with the Windows-native authentication backend.
CVSS Score
MEDIUM
Related Weaknesses (CWE)
References
- https://github.com/mongodb/mongo-c-driver/releases/tag/1.30.14
- https://github.com/mongodb/mongo-c-driver/releases/tag/2.5.7
- https://github.com/mongodb/mongo-c-driver/security/advisories/GHSA-g9mw-2cwh-6hh
- https://jira.mongodb.org/browse/CDRIVER-6421
FAQ
What is CVE-2026-114645?
CVE-2026-114645 is a vulnerability with a CVSS score of 5.2 (MEDIUM). A 32-bit integer wraparound in the MongoDB C Driver's Windows-only Kerberos/SSPI authentication code can cause an undersized heap buffer to be allocated when an excessively long credential value is su...
How severe is CVE-2026-114645?
CVE-2026-114645 has been rated MEDIUM with a CVSS base score of 5.2/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-114645?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.