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GODRIVER-3397 Remove the MONGODB-CR auth mechanism. #2103

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Merged
merged 3 commits into from
Jun 30, 2025
Merged

GODRIVER-3397 Remove the MONGODB-CR auth mechanism. #2103

merged 3 commits into from
Jun 30, 2025

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matthewdale
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@matthewdale matthewdale commented Jun 17, 2025 •
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GODRIVER-3397

Summary

Remove auth mechanism "MONGODB-CR" and all supporting code. Trying to use auth mechanism "MONGODB-CR" will now return error:

auth mechanism "MONGODB-CR" is not available in any supported version of MongoDB

Background & Motivation

Starting with v2.2.0, the Go Driver no longer supports any version of MongoDB that has auth mechanism "MONGODB-CR". Here are the errors you get when you try to use MongoDB 3.6, 4.0, and 8.0:

MongoDB 3.6:

server at localhost:27017 reports wire version 6, but this version of the Go driver requires at least 7 (MongoDB 4.0)

MongoDB 4.0, 4.2:

connection() error occurred during connection handshake: auth error: unable to authenticate using mechanism "MONGODB-CR": (BadValue) Auth mechanism not specified

MongoDB 8.0:

connection() error occurred during connection handshake: auth error: unable to authenticate using mechanism "MONGODB-CR": (CommandNotFound) no such command: 'getnonce'

@mongodb-drivers-pr-bot mongodb-drivers-pr-bot bot added the priority-3-low Low Priority PR for Review label Jun 17, 2025
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API Change Report

./v2/x/mongo/driver/auth

incompatible changes

MONGODBCR: removed
MongoDBCRAuthenticator: removed

@matthewdale matthewdale force-pushed the godriver3397-remove-cr branch from 70081eb to cf46ed0 Compare June 17, 2025 01:17
@matthewdale matthewdale marked this pull request as ready for review June 17, 2025 01:18
@matthewdale matthewdale requested a review from a team as a code owner June 17, 2025 01:18
prestonvasquez
prestonvasquez reviewed Jun 28, 2025
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prestonvasquez
prestonvasquez approved these changes Jun 28, 2025
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LGTM

@matthewdale matthewdale merged commit 6598290 into mongodb:master Jun 30, 2025
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@prestonvasquez prestonvasquez prestonvasquez approved these changes

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