CVE-2026-57219: rabbitmq server Information Disclosure

Description

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.

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CVSS v3.1 Score

7.5

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

EPSS — Exploit Prediction

0.0036

Probability of exploitation

0.28%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-200 CWE-200

CWE-522 CWE-522

Affected Products

Vendor	Product	Versions
broadcom	rabbitmq_server	3.13.0 — 4.2.6

References

Advisories & Patches

https://github.com/rabbitmq/rabbitmq-server/commit/98b1daf740237c85941e8addcbea6e74f4a2743c https://github.com/rabbitmq/rabbitmq-server/commit/aa387c4451e7b674df3e3ba89df86a99d697cc7f https://github.com/rabbitmq/rabbitmq-server/pull/16083 https://github.com/rabbitmq/rabbitmq-server/pull/16086 https://github.com/rabbitmq/rabbitmq-server/security/advisories/GHSA-pj24-8j6m-vq9q

Other References

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

Frequently Asked Questions

What is CVE-2026-57219? +

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. It has a CVSS v3.1 base score of 7.5 (HIGH).

How severe is CVE-2026-57219? +

CVE-2026-57219 has a CVSS v3.1 score of 7.5 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching. The EPSS score is 0.0036, placing it in the 0th percentile for exploitation probability.

What products are affected by CVE-2026-57219? +

CVE-2026-57219 affects products from broadcom, specifically: rabbitmq_server. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2026-57219? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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