CVE-2026-67415

Name	CVE-2026-67415
Description	RabbitMQ is a messaging and streaming broker. From 4.2.0 until 4.2.9 and 4.3.3, the Shovel parameter parser converted attacker-controlled runtime parameter values into non-garbage-collected Erlang atoms before bounding them or checking a fixed allowlist. Exploitation requires network access to the Management HTTP API, valid credentials with both the management and policymaker tags, permission to set Shovel runtime parameters on a vhost, and the rabbitmq_shovel and rabbitmq_shovel_management plugins to be enabled. The attacker can exhaust the node-wide atom table and deny service, and malicious parameters are stored durably and reparsed when workers start, so atom pressure can recur after restart without a live attacker connection. This issue is fixed in versions 4.2.9 and 4.3.3.
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-8mpg-qw9r-m5cr