5.3

CVE-2026-57221: broadcom rabbitmq_server Missing Authorization

CVSS: 5.3v4.0MediumAnalyzed
AliasesUBUNTU-CVE-2026-57221DEBIAN-CVE-2026-57221CGA-g32w-8vxj-2f9r
Published 10-07-2026Last modified 13-07-2026
Open JSON

Vulnerability summary

CVE-2026-57221 is a medium (CVSS 5.3) Missing Authorization vulnerability in broadcom rabbitmq_server. EPSS estimates a 0.41% chance of exploitation in the next 30 days, higher than 33.8% of scored vulnerabilities. 1 public exploit is recorded.

Overall risk
31/100
0100
Medium · default modelHow is this calculated?
CVSS score
5.3/10
010
Medium · v4.0 (CVE.org)
EPSS score
0.41%
0%100%
Low · -0.06 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1github

Advisory lineage

Upstream 0 · Downstream 5 · Related 3
OPENSUSE-SU-2026:21903-1RHSA-2026:35939RHSA-2026:35940SUSE-SU-2026:23859-1SUSE-SU-2026:23869-1

Timeline

  1. 10-07-2026
    PublishedVulnerability first disclosed.
  2. 13-07-2026
    Last modifiedVulnerability information updated.

Description

RabbitMQ is a messaging and streaming broker. Prior to 3.13.15, 4.0.20, 4.1.11, and 4.2.6, RabbitMQ does not perform authorization checks on passive queue.declare and exchange.declare AMQP 0-9-1 operations, allowing any authenticated user who can connect to a virtual host to enumerate queue and exchange names and read queue message and consumer counts. This issue is fixed in versions 3.13.15, 4.0.20, 4.1.11, and 4.2.6.

CVSS metrics

8 scores · 6 sources · 2 versions

EPSS trend

Probability

0.41%

Chance of exploitation in the next 30 days

Percentile

34%

Versus all other CVEs

30-day change

-0.06 pp

From 0.47% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.41%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

1 found
  • githubUnverified

    Rabbitmq Server

    Maturity: poc

Weaknesses

CWE · root cause

Affected systems

Chainguard6 products
  • rabbitmq-server-4.1All versions (No fix recorded)
  • rabbitmq-server-4.1-docAll versions (No fix recorded)
  • rabbitmq-server-4.1-iamguarded-compatAll versions (No fix recorded)
  • rabbitmq-server-fips-4.1All versions (No fix recorded)
  • rabbitmq-server-fips-4.1-docAll versions (No fix recorded)
Broadcom1 product
Debian1 product
  • rabbitmq-serverAll versions (No fix recorded) | < 4.3.0-2
Rabbitmq1 product
  • rabbitmq-server≥ 4.2.0, < 4.2.6 | ≥ 4.1.0, < 4.1.11 | ≥ 4.0.0, < 4.0.21 | ≥ 3.13.0, < 3.13.15
Ubuntu1 product
  • rabbitmq-serverAll versions (No fix recorded)
Wolfi1 product
  • rabbitmq-server-4.1All versions (No fix recorded)

6 vendors · 11 products

References

11 links
Show all 11 references