rabbitmq-server 4.0.5-10ubuntu5.2: rabbitmq-server 4.0.5-10ubuntu5.2 for Ubuntu 26.04.1 LTS (resolute)

rabbitmq-server 4.0.5-10ubuntu5.2, released September 25, 2026, fixes 12 CVEs in rabbitmq-server. None of them is reported as exploited. Patch Radar priority: Urgent.

Urgent

CVEs closed

1 rated Critical

Exploited

None reported

Highest CVSS

9.3

Base score, 0 to 10

Highest EPSS

0.0045

39th percentile

Priority of the 12 CVEs

Patch now 0
                                Urgent 1
                                High 5
                                Routine 6

Fixed package versions

Product	Release	Fixed in
rabbitmq-server	Ubuntu 26.04.1 LTS (resolute)	4.0.5-10ubuntu5.2

CVEs this fix closes

Priority	CVE	Title	CVSS	EPSS	Exploitation
Urgent	CVE-2026-67404	RabbitMQ: OAuth2 silent verify_none fallback for JWKS fetch	7.4	0.0020	None reported
High	CVE-2026-67237	rabbitmq-server: RabbitMQ is a messaging and streaming broker	9.3	0.0045	None reported
High	CVE-2026-67232	RabbitMQ: Web-MQTT decompression bomb	7.5	0.0039	None reported
High	CVE-2026-66070	RabbitMQ: CORS * reflects Origin with Allow-Credentials	8.8	0.0037	None reported
High	CVE-2026-66079	RabbitMQ: Pre-auth AMQP 1.0 array32 zero-width element DoS	7.5	0.0032	None reported
High	CVE-2026-67231	RabbitMQ: Trust-store whitelist by Issuer+Serial only	9.1	0.0023	None reported
Routine	CVE-2026-67409	RabbitMQ: JWKS Fetch Ignores HTTP Response Status Code - Signing Key Destruction Causes Authentication DoS	6.5	0.0042	None reported
Routine	CVE-2026-67238	rabbitmq-server: RabbitMQ is a messaging and streaming broker	6.5	0.0039	None reported
Routine	CVE-2026-67235	RabbitMQ: AMQP 0-9-1 body assembly never validates accumulated size	6.5	0.0030	None reported
Routine	CVE-2026-67236	rabbitmq-server: RabbitMQ is a messaging and streaming broker	6.5	0.0017	None reported
Routine	CVE-2026-67239	RabbitMQ: Stored XSS via TLS peer-certificate DN in stream-management UI	5.4	0.0015	None reported
Routine	CVE-2026-66077	RabbitMQ: Stored XSS via TLS peer-certificate DN in management UI	6.1	0.0015	None reported

Also fixes CVE-2026-67404

rabbitmq-server 3.12.1-1ubuntu1.7
rabbitmq-server on Ubuntu 24.04.5 LTS (noble)
rabbitmq-server 3.9.27-0ubuntu0.6
rabbitmq-server on Ubuntu 22.04.1 LTS (jammy)
rabbitmq-server 3.8.3-0ubuntu0.3+esm2
rabbitmq-server on Ubuntu 20.04 LTS (focal)
rabbitmq-server 3.6.10-1ubuntu0.5+esm1
rabbitmq-server on Ubuntu 18.04.6 LTS (bionic)
DEBIAN-CVE-2026-67404
rabbitmq-server on Debian 14

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