7.5

CVE-2026-57220: broadcom rabbitmq_server

CVSS: 7.5v3.1HighAnalyzed
AliasesUBUNTU-CVE-2026-57220CGA-2553-cmjh-8745CGA-q4jx-x58q-xmhq
Published 10-07-2026Last modified 13-07-2026
Open JSON

Vulnerability summary

CVE-2026-57220 is a high (CVSS 7.5) vulnerability in broadcom rabbitmq_server. EPSS estimates a 0.55% chance of exploitation in the next 30 days, higher than 44.6% of scored vulnerabilities. 1 public exploit is recorded.

Overall risk
40/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.1 (CVE.org)
EPSS score
0.55%
0%100%
Low · -0.42 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 4.2.6, the RabbitMQ stream listener does not enforce the configured stream frame-size limit while assembling frames during authentication and before Tune negotiation, allowing an unauthenticated remote client to declare oversized frame lengths and consume broker memory in rabbit_stream_core. This issue is fixed in version 4.2.6.

CVSS metrics

5 scores · 5 sources · 1 version

EPSS trend

Probability

0.55%

Chance of exploitation in the next 30 days

Percentile

45%

Versus all other CVEs

30-day change

-0.42 pp

From 0.97% on 18-09-2026

18-09-202618-10-2026
EPSS score
0.55%

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
Rabbitmq1 product
Ubuntu1 product
  • rabbitmq-serverAll versions (No fix recorded)
Wolfi1 product
  • rabbitmq-server-4.1All versions (No fix recorded)

5 vendors · 10 products

References

10 links