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Vulnerability · Published Jul 10, 2026 · Assigned by GitHub_M

CVE-2026-57213RabbitMQ: Stored XSS federation management plugin via unsanitized consumer_tag rendering

Medium 5.7

In plain English

A medium-severity cross-site scripting in rabbitmq-server from rabbitmq. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 17% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 4.0)5.7Medium
Exploit odds (30 days)0.3%top 83.3% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known

Official description

RabbitMQ is a messaging and streaming broker. Prior to 3.13.14, 4.0.19, 4.1.10, and 4.2.5, the rabbitmq_federation_management plugin renders the consumer_tag field on the Federation Status page without HTML escaping, allowing a user who can configure a federation upstream or policy to execute JavaScript in the browser of a user viewing that page. This issue is fixed in versions 3.13.14, 4.0.19, 4.1.10, and 4.2.5.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12rabbitmq-serverno fix listedDEBIAN-CVE-2026-57213
Debian:13rabbitmq-serverno fix listedDEBIAN-CVE-2026-57213
Debian:14rabbitmq-server4.3.0-2DEBIAN-CVE-2026-57213
Ubuntu:22.04:LTSrabbitmq-serverno fix listedUBUNTU-CVE-2026-57213
Ubuntu:24.04:LTSrabbitmq-serverno fix listedUBUNTU-CVE-2026-57213
Ubuntu:26.04:LTSrabbitmq-serverno fix listedUBUNTU-CVE-2026-57213
Ubuntu:26.10rabbitmq-serverno fix listedUBUNTU-CVE-2026-57213

Affected products (as reported)

VendorProductVersions
rabbitmq rabbitmq-server >= 4.2.0, < 4.2.5>= 4.1.0, < 4.1.10>= 4.0.0, < 4.0.19>= 3.13.0, < 3.13.14

Weakness: CWE-79 · Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:P/VC:H/VI:N/VA:N/SC:L/SI:N/SA:N

References