CVE-2026-67410

Name	CVE-2026-67410
Description	RabbitMQ is a messaging and streaming broker. From 4.2.0 until 4.3.3 and 4.2.9, OAuth2 Client Secret Exposed via Unauthenticated JavaScript Endpoint (CWE-200). when OAuth2 authentication is enabled for the RabbitMQ Management UI and the configured flow, IDP use a client secret, the oauthclientsecret configuration value is included in the JavaScript served by the unauthenticated endpoint /js/oidc-oauth/bootstrap.js. Any user who can reach the management UI port can retrieve the OAuth2 client secret without Files: deps/rabbitmqmanagement/src/rabbitmgmtwmauth.erl, line 186 deps/rabbitmqmanagement/src/rabbitmgmtoauthbootstrap.erl, lines 35-50 deps/rabbitmqmanagement/src/rabbitmgmtdispatcher.erl, lines 45-49 (route registration) Code Path: 1. The route /js/oidc-oauth/bootstrap.js is registered as a plain Cowboy handler (rabbitmgmtdispatcher.erl:46): Credential exposure for the affected configuration: OAuth2 client secret is accessible without any authentication Token theft: Attacker can complete the authorization code flow using stolen authorization codes Client impersonation: Attacker can make requests. Any RabbitMQ deployment with: This issue is fixed in versions 4.3.3 and 4.2.9.
Source	CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
rabbitmq-server (PTS)	bookworm, bookworm (security)	3.10.8-1.1+deb12u1	fixed
	trixie	4.0.5-6+deb13u2	fixed
	forky	4.3.2-4	vulnerable
	sid	4.3.2-5	vulnerable

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version
rabbitmq-server	source	bookworm	(not affected)
rabbitmq-server	source	trixie	(not affected)
rabbitmq-server	source	(unstable)	(unfixed)

Notes

[trixie] - rabbitmq-server <not-affected> (Vulnerable code not present, only affects 4.2.x and later)
[bookworm] - rabbitmq-server <not-affected> (Vulnerable code not present, only affects 4.2.x and later)
https://github.com/rabbitmq/rabbitmq-server/security/advisories/GHSA-f9f2-q3jf-wfj3