OPENSUSE-SU-2026:21903-1: rabbitmq-server security update

OPENSUSE-SU-2026:21903-1, released September 22, 2026, fixes 10 CVEs in rabbitmq-server (version 4.1.5-160000.2.1). None of them is reported as exploited. Patch Radar priority: High.

High

CVEs closed

None rated Critical

Exploited

None reported

Highest CVSS

10.0

Base score, 0 to 10

Highest EPSS

0.0284

86th percentile

Priority of the 10 CVEs

Patch now 0
                                Urgent 0
                                High 4
                                Routine 6

Fixed package versions

Product	Release	Fixed in
rabbitmq-server	opensuse-leap 16.0	4.1.5-160000.2.1

CVEs this fix closes

Priority	CVE	Title	CVSS	EPSS	Exploitation
High	CVE-2026-57219	RabbitMQ: Unauthenticated disclosure of OAuth client credentials via an HTTP API endpoint with certain less common OAuth 2 configurations	7.5	0.0284	None reported
High	CVE-2026-57220	RabbitMQ: Stream listener does not enforce configured frame-size limit during authentication, permitting unauth'd mem-exhaust DoS	7.5	0.0055	None reported
High	CVE-2026-57216	RabbitMQ: AMQP 1.0, AMQP 0-9-1, Stream Protocol loopback enforcement can lead to remote guest sessions due to listener-address loopback checks	10.0	0.0050	None reported
High	CVE-2026-57212	rabbitmq-server: RabbitMQ is a messaging and streaming broker	7.7	0.0043	None reported
Routine	CVE-2026-57221	rabbitmq-server: RabbitMQ is a messaging and streaming broker	5.0	0.0041	None reported
Routine	CVE-2026-57217	RabbitMQ: Topic authorization can lead to cross-tenant routing-key bypass	6.5	0.0035	None reported
Routine	CVE-2026-57218	rabbitmq-server: RabbitMQ is a messaging and streaming broker	6.5	0.0035	None reported
Routine	CVE-2026-57213	RabbitMQ: Stored XSS federation management plugin via unsanitized consumer_tag rendering	4.8	0.0025	None reported
Routine	CVE-2026-57214	rabbitmq-server: RabbitMQ is a messaging and streaming broker	5.4	0.0022	None reported
Routine	CVE-2026-44839	RabbitMQ: Unsanitized vhost names allow for XSS in management UI	4.8	0.0018	None reported

Also fixes CVE-2026-57219

SUSE-SU-2026:23869-1
rabbitmq-server on sles 16.0
FEDORA-2026-548235EA3B
rabbitmq-server on Fedora 43
DEBIAN-CVE-2026-57219
rabbitmq-server on Debian 14

Vendor advisory

https://osv.dev/vulnerability/openSUSE-SU-2026:21903-1

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