mongo-c-driver 2.5.1

The Official MongoDB driver for C language

Release notes

Announcing 2.5.1 of libbson and libmongoc, the libraries constituting the MongoDB C Driver.

# libbson

No changes since 2.5.1. Version incremented to match the libmongoc version.

# libmongoc

## Fixes
- Validate database and collection name arguments against "." and NUL bytes ([CVE-2026-81524](https://www.cve.org/CVERecord?id=CVE-2026-81524))


# Links:


* [All the issues resolved in 2.5.1](https://jira.mongodb.org/issues/?jql=project%3D%22C%20Driver%22%20and%20fixVersion%3D%222.5.1%22)
* [Documentation](https://mongoc.org/)


Thanks to everyone who contributed to this release.

- Kevin Albertson

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