# CVE-2026-57219: RabbitMQ information disclosure in management API auth endpoint

Source: https://junglewise.ai/threats/cve-2026-57219-rabbitmq-information-disclosure-in-management-api-auth-endpoint  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-07-10. Updated: 2026-07-10  
License: CC BY 4.0 with a link back

CVE-2026-57219 · Severity: info · CVSS 8.7 · Published 2026-07-10

RabbitMQ is a widely used message broker that facilitates communication between different software applications. A security flaw in its management interface could allow unauthorized individuals to view sensitive OAuth 2 client secrets. If exploited, this could lead to unauthorized access to the messaging system, potentially compromising data integrity or allowing attackers to intercept private communications.

Technologies: [Broadcom Rabbitmq Server](https://junglewise.ai/threats/technologies/rabbitmq-server). Vendors: [Broadcom](https://junglewise.ai/threats/vendors/broadcom).

## Quick answers

**Is CVE-2026-57219 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-57219 being exploited in the wild.

**How severe is CVE-2026-57219?** Informational severity, with a CVSS score of 8.7, published 10 July 2026.

**Which products and versions are affected?** Broadcom Rabbitmq Server >= 3.13.0, < 3.13.15; >= 4.0.0, < 4.0.20; >= 4.1.0, < 4.1.11; >= 4.2.0, < 4.2.6.

**Is there a fix for CVE-2026-57219?** A patch was published on 2026-04-14: Fixes merged into main and backport branches Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-57219 attacked?** It is attacked over the network, in a hosted service.

**Am I affected by CVE-2026-57219?** Check whether you run Broadcom Rabbitmq Server at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

An information disclosure vulnerability exists in the RabbitMQ Management Plugin due to the presence of a deprecated and obsolete API endpoint. The 'GET /api/auth' endpoint, which has been superseded by 'bootstrap.js' since version 3.11, fails to properly protect sensitive configuration data. When RabbitMQ is configured with 'management.oauth_client_secret', an unauthenticated remote attacker can query this endpoint to retrieve the OAuth 2 client secret. This secret can then be used to impersonate the RabbitMQ management client or gain unauthorized access to the broker. The vulnerability is resolved by the complete removal of the deprecated endpoint in versions 3.13.15, 4.0.20, 4.1.11, and 4.2.6.

## Affected products

- RabbitMQ RabbitMQ Server >= 3.13.0, < 3.13.15; >= 4.0.0, < 4.0.20; >= 4.1.0, < 4.1.11; >= 4.2.0, < 4.2.6

## Timeline

- 2026-04-14: patched: Fixes merged into main and backport branches
- 2026-04-23: advisory: Release of version 4.2.6 containing the fix
- 2026-07-10: disclosed: CVE-2026-57219 published

## References

- [https://github.com/rabbitmq/rabbitmq-server/commit/98b1daf740237c85941e8addcbea6e74f4a2743c](https://github.com/rabbitmq/rabbitmq-server/commit/98b1daf740237c85941e8addcbea6e74f4a2743c)
- [https://github.com/rabbitmq/rabbitmq-server/commit/aa387c4451e7b674df3e3ba89df86a99d697cc7f](https://github.com/rabbitmq/rabbitmq-server/commit/aa387c4451e7b674df3e3ba89df86a99d697cc7f)
- [https://github.com/rabbitmq/rabbitmq-server/pull/16083](https://github.com/rabbitmq/rabbitmq-server/pull/16083)
- [https://github.com/rabbitmq/rabbitmq-server/pull/16086](https://github.com/rabbitmq/rabbitmq-server/pull/16086)
- [https://github.com/rabbitmq/rabbitmq-server/releases/tag/v4.2.6](https://github.com/rabbitmq/rabbitmq-server/releases/tag/v4.2.6)
- [https://github.com/rabbitmq/rabbitmq-server/security/advisories/GHSA-pj24-8j6m-vq9q](https://github.com/rabbitmq/rabbitmq-server/security/advisories/GHSA-pj24-8j6m-vq9q)

## Related threats

- [RabbitMQ authentication bypass for loopback-restricted users](https://junglewise.ai/threats/cve-2026-57216-rabbitmq-authentication-bypass-for-loopback-restricted-users)
- [RabbitMQ incorrect authorization in amq.rabbitmq.reply-to bindings](https://junglewise.ai/threats/cve-2026-57215-rabbitmq-incorrect-authorization-in-amq-rabbitmq-reply-to)
- [RabbitMQ resource exhaustion in management HTTP API via oversized JSON](https://junglewise.ai/threats/cve-2026-57212-rabbitmq-resource-exhaustion-in-management-http-api-via-oversized)