CVE-2026-96746

An out-of-bounds write in the connection-monitoring logic of the MongoDB C Driver may allow an unauthenticated party who controls name resolution and the responses of the hosts named in a client's connection string to write beyond the end of a heap buffer. This may cause the application using the driver to terminate unexpectedly.

• https://github.com/mongodb/mongo-c-driver/releases/tag/1.30.12
• https://github.com/mongodb/mongo-c-driver/releases/tag/2.5.5
• https://github.com/mongodb/mongo-c-driver/security/advisories/GHSA-frjf-h5jg-4v46