CVE-2026-57219

HIGH8.7

RabbitMQ: Unauthenticated disclosure of OAuth client credentials via an HTTP API endpoint with certain less common OAuth 2 configurations

Published Jul 10, 2026

Modified Yesterday

Details

RabbitMQ is a messaging and streaming broker. Prior to 3.13.15, 4.0.20, 4.1.11, and 4.2.6, the obsolete GET /api/auth endpoint can disclose the OAuth 2 client secret on RabbitMQ installations configured with management.oauth_client_secret, exposing credentials to unauthenticated callers when the management plugin and that OAuth configuration are enabled. This issue is fixed in versions 3.13.15, 4.0.20, 4.1.11, and 4.2.6.

References

WEB

https://github.com/rabbitmq/rabbitmq-server/commit/98b1daf740237c85941e8addcbea6e74f4a2743c

WEB

https://github.com/rabbitmq/rabbitmq-server/commit/aa387c4451e7b674df3e3ba89df86a99d697cc7f

WEB

https://github.com/rabbitmq/rabbitmq-server/pull/16083

WEB

https://github.com/rabbitmq/rabbitmq-server/pull/16086

WEB

https://github.com/rabbitmq/rabbitmq-server/releases/tag/v4.2.6

WEB