Announcing 2.2.0 of libbson and libmongoc, the libraries constituting the MongoDB C Driver.

libbson

Improvements

• Increase resolution of bson_get_monotonic_time on Windows.

Deprecated

• Support for macOS 11 (EOL since September 2023) and macOS 12 (EOL since September 2024).

Removed

• Support for Visual Studio 2015 (EOL since October 2025). Use Visual Studio 2017 or newer.

libmongoc

New Features

• MONGODB-OIDC authentication mechanism.
  • Support a custom callback with mongoc_client_set_oidc_callback and mongoc_client_pool_set_oidc_callback.
  • Support Azure environment with property environment:azure.
  • Support GCP environment with property environment:gcp.
  • Kubernetes environment is not-yet supported.
• Add features to mongoc_bulkwrite_t:
  • Add mongoc_bulkwrite_is_acknowledged.
  • Add mongoc_bulkwriteresult_serverid.
  • Support Queryable Encryption.
• Support text indexes for Queryable Encryption:
  • Add mongoc_client_encryption_encrypt_text_opts_t.
  • Substring, prefix and suffix search are in preview and should be used for experimental workloads only. These features are unstable and their security is not guaranteed until released as Generally Available (GA). The GA version of these features may not be backwards compatible with the preview version
• Support TLS v1.3 with Windows Secure Channel.

Fixed

• Do not try to resume when iterating a closed change stream.

Notes

• Raise required version of libmongocrypt from 1.13.0 to 1.15.0 to support In-Use Encryption (corresponds to the CMake option: ENABLE_CLIENT_SIDE_ENCRYPTION).

Deprecated

• Support for macOS 11 (EOL since September 2023) and macOS 12 (EOL since September 2024).

Removed

• Support for Visual Studio 2015 (EOL since October 2025). Use Visual Studio 2017 or newer.

Links:

• All the issues resolved in 2.2.0
• Documentation

Thanks to everyone who contributed to this release.

• Kevin Albertson
• Connor MacDonald
• Julia Garland
• Ezra Chung
• Adrian Dole
• Colby Pike
• Roberto C. Sánchez
• shubhamhii

Announcing 2.1.2 of libbson and libmongoc, the libraries constituting the MongoDB C Driver.

libbson

No changes since 2.1.1. Version incremented to match the libmongoc version.

libmongoc

Fixes

• Fix write command options handling.

Links:

• All the issues resolved in 2.1.2
• Documentation

Thanks to everyone who contributed to this release.

• Ezra Chung
• Kevin Albertson

Announcing 1.30.6 of libbson and libmongoc, the libraries constituting the MongoDB C Driver.

libbson

No changes since 1.30.5. Version incremented to match the libmongoc version.

libmongoc

Fixes:

• Fix write command options handling.

Links:

• All the issues resolved in 1.30.6
• Documentation

Thanks to everyone who contributed to this release.

• Ezra Chung
• Kevin Albertson

Announcing 2.1.1 of libbson and libmongoc, the libraries constituting the MongoDB C Driver.

libbson

No changes since 2.1.0. Version incremented to match the libmongoc version.

libmongoc

Fixes

• Do not propagate -fPIC in CMake targets.
• Apply write command behavior to mongoc_collection_create_indexes_with_opts.
• Omit saslSupportedMechs in single-threaded monitoring commands.

Links:

• All the issues resolved in 2.1.1
• Documentation

Thanks to everyone who contributed to this release.

• Julia Garland
• Roberto C. Sánchez

Announcing 2.1.0 of libbson and libmongoc, the libraries constituting the MongoDB C Driver.

libbson

Fixes

• The uninstall script for Windows is fixed so it no longer "succeeds" with a non-zero %ERRORLABEL% value.
• The uninstall script for non-Windows environments now calls find "$dir" -maxdepth 1 instead of ls --almost-all "$dir" when detecting non-empty directories to fix macOS compatibility.

Changed

• The CMake project now sets a CMake policy max version of 4.0 (previously unset).

Removed

• Support for Debian 9 and Debian 10.

libmongoc

Fixes

• Windows Secure Channel is fixed to support newer signatures to verify client certificates.
• Replace use of rand() with thread-safe alternatives.
• The uninstall script for Windows is fixed so it no longer "succeeds" with a non-zero %ERRORLABEL% value.
• The uninstall script for non-Windows environments now calls find "$dir" -maxdepth 1 instead of ls --almost-all "$dir" when detecting non-empty directories to fix macOS compatibility.

Improvements

• Remove unhelpful long-lived buffers to reduce memory usage.
• Improve error messages produced by Windows APIs.

Notes

• The minimum supported MongoDB Server version is raised from 4.0 to 4.2. This is in accordance with MongoDB Software Lifecycle Schedules.

Changes

• The CMake project now sets a CMake policy max version of 4.0 (previously unset).

Removed

• Support for Debian 9 and Debian 10.

Links:

• All the issues resolved in 2.1.0
• Documentation

Thanks to everyone who contributed to this release.

• Kevin Albertson
• Ezra Chung
• Colby Pike
• Adrian Dole
• Azat Khuzhin
• Jeroen Ooms
• Roberto C. Sánchez
• Micah Scott

Announcing 2.0.2 of libbson and libmongoc, the libraries constituting the MongoDB C Driver.

libbson

Fixes:

• Various fixes have been applied to the bson_validate family of functions,
  with some minor behavioral changes.
  • Previously accepted invalid UTF-8 will be rejected when BSON_VALIDATE_UTF8
    is specified.
  • The scope document in a deprecated "code with scope" element is now
    validated with a fixed set of rules and is treated as an opaque JavaScript
    object.
  • A document nesting limit is now enforced during validation.

libmongoc

Fixes:

• Fix message of bson_strerror_r on Windows.
• Fix memory leaks with Windows Secure Channel.
• Fix loading PKCS#8 RSA keys with Windows Secure Channel.

Links:

• All the issues resolved in 2.0.2
• Documentation

Thanks to everyone who contributed to this release.

• Kevin Albertson
• Colby Pike

Announcing 1.30.5 of libbson and libmongoc, the libraries constituting the MongoDB C Driver.

libbson

Fixes:

• Various fixes have been applied to the bson_validate family of functions,
  with some minor behavioral changes.
  • Previously accepted invalid UTF-8 will be rejected when BSON_VALIDATE_UTF8
    is specified.
  • The scope document in a deprecated "code with scope" element is now
    validated with a fixed set of rules and is treated as an opaque JavaScript
    object.
  • A document nesting limit is now enforced during validation.

libmongoc

Fixes:

• Fix message of bson_strerror_r on Windows.
• Fix memory leaks with Windows Secure Channel.
• Fix loading PKCS#8 RSA keys with Windows Secure Channel.

Links:

• All the issues resolved in 1.30.5
• Documentation

Thanks to everyone who contributed to this release.

• Kevin Albertson
• Colby Pike

Announcing 2.0.1 of libbson and libmongoc, the libraries constituting the MongoDB C Driver.

libbson

Fixes:

• Fix CMake configure error on macOS with CMake 4.

libmongoc

Fixes:

• Fix username handling for MONGODB-X509 authentication when C driver is configured to use Secure Transport (CMake option ENABLE_SSL=DARWIN) or Secure Channel (CMake option ENABLE_SSL=WINDOWS).
• Do not set empty partial result on client error for mongoc_bulkwrite_execute.

Links:

• All the issues resolved in 2.0.1
• Documentation

Thanks to everyone who contributed to this release.

• Kevin Albertson

Announcing 1.30.4 of libbson and libmongoc, the libraries constituting the MongoDB C Driver.

libbson

No changes since 1.30.3. Version incremented to match the libmongoc version.

libmongoc

Fixes:

• Fix username handling for MONGODB-X509 authentication when C driver is configured to use Secure Transport (CMake option ENABLE_SSL=DARWIN) or Secure Channel (CMake option ENABLE_SSL=WINDOWS).
• Do not set empty partial result on client error for mongoc_bulkwrite_execute.

Links:

• All the issues resolved in 1.30.4
• Documentation

Thanks to everyone who contributed to this release.

• Kevin Albertson

Announcing 1.30.3 of libbson and libmongoc, the libraries constituting the MongoDB C Driver.

libbson

Fixes:

• Fix CMake configure error on macOS with CMake 4.

New Features:

• In anticipation of the 2.0 release of mongo-c-driver, new CMake packages and
  imported targets have been defined (for both bson and mongoc). To import
  bson with the new names, call find_package for the bson package. The new
  imported targets are named bson::static, bson::shared, and bson::bson
  (which points to either the static or the shared library, depending on an
  import-time configuration option).

  The new package and target names will remain unchanged when upgrading to the
  2.0 release, allowing consumers to support both major versions without
  modifying their CMake project. The current imported target names will be
  removed from the 2.0 release, and should not be used for
  forward-compatibility.

libmongoc

New Features:

• In anticipation of the 2.0 release of mongo-c-driver, new CMake packages and
  imported targets have been defined (for both bson and mongoc). To import
  mongoc with the new names, call find_package for the mongoc package. The
  new imported targets are named mongoc::static, mongoc::shared, and
  mongoc::mongoc (which points to either the static or the shared library,
  depending on an import-time configuration option).

  The new package and target names will remain unchanged when upgrading to the
  2.0 release, allowing consumers to support both major versions without
  modifying their CMake project. The current imported target names will be
  removed from the 2.0 release, and should not be used for
  forward-compatibility.

  Programs that link to BSON libraries directly should also use the new target
  names bson::static, bson::shared, or bson::bson.

Links:

• All the issues resolved in 1.30.3
• Documentation

Thanks to everyone who contributed to this release.

• Kevin Albertson
• Ezra Chung
• Colby Pike