CVE-2026-114645

Impact

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.

Affected packages

This record carries no package version data, so it cannot be matched against a dependency list automatically. Read the advisory and compare your version by hand.

Weakness classification

References

• NVD record
• CVE.org record
• 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-6hh9
• https://jira.mongodb.org/browse/CDRIVER-6421