Patch Forecast
Yellow warning
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CVE-2026-67225

RabbitMQ is a messaging and streaming broker

Risk score
55/100
CVSS
7.5 v3.1
Exploit chance (30 days)
0.3%
Published
25 Sep 2026

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What to know

What it is
RabbitMQ is a messaging and streaming broker. From 3.13.0 until 3.13.15, 4.0.20, 4.1.11, and 4.2.6, the stream protocol stored the FrameMax value negotiated during the Tune handshake but did not compare it with an inbound frame's declared length before buffering the frame. With the stream plugin enabled, a remote clie…
Affected
Broadcom Rabbitmq Server before 3.13.15, 4.0.20, 4.1.11, 4.2.6
Fix
Upgrade Broadcom Rabbitmq Server to 3.13.15, 4.0.20, 4.1.11 or 4.2.6 (whichever matches your release line), or later.
Exploitation
No known exploitation

Story map

Story map: Broadcom Rabbitmq ServerTHE FLAWSTHE FIXCVE-2026-67225RabbitMQ is a messaging andstreaming brokerCVSS 7.5 · EPSS 0%CVE-2026-67237RabbitMQ is a messaging andstreaming brokerCVSS 9.3 · EPSS 0%CVE-2026-66070RabbitMQ is a messaging andstreaming brokerCVSS 8.8 · EPSS 0%CVE-2026-67231RabbitMQ is a messaging andstreaming brokerCVSS 9.1 · EPSS 0%Upgrade Broadcom Rabbitmq…3.13.15 · 4.0.20 · 4.1.11 · 4.2.6 ·4.2.8 · 4.3.2or later on your release lineWho is exposedBroadcom Rabbitmq Serverbefore 4.2.8, 4.3.2AMBER · PATCH THIS WEEKBroadcomRabbitmq ServerRabbitMQ is a messaging andstreaming broker. From 4.2.0until 4.2.8 and 4.3.2,set_token_auth/2 inserted abearer token from theAuthorization header oraccess_token cookie into OAuth…Where it standsNo known exploitationCONNECTS TOSame weaknessDenial of service (CWE-770)202 other warnings in 30 days →Same productEarlier Broadcom Rabbitmq Server warnings45 in the last 90 days →
Story map: the flaws, the fix, how it unfolded and what it connects to. Boxes link to the record or article.

At a glance

Broadcom Rabbitmq Server: Amber, patch this week. RabbitMQ is a messaging and streaming broker. From 4.2.0 until 4.2.8 and 4.3.2, set_token_auth/2 inserted a bearer token from the Authorization header or access_token cookie into OAuth bootstrap JavaScript without escaping, allowing attacker-controlled token content to execute JavaScript in the management UI origin. T…

The flaws

  • CVE-2026-67225: RabbitMQ is a messaging and streaming broker (CVSS 7.5 · EPSS 0%)
  • CVE-2026-67237: RabbitMQ is a messaging and streaming broker (CVSS 9.3 · EPSS 0%)
  • CVE-2026-66070: RabbitMQ is a messaging and streaming broker (CVSS 8.8 · EPSS 0%)
  • CVE-2026-67231: RabbitMQ is a messaging and streaming broker (CVSS 9.1 · EPSS 0%)

The fix

Upgrade Broadcom Rabbitmq Server: 3.13.15 · 4.0.20 · 4.1.11 · 4.2.6 · 4.2.8 · 4.3.2 or later on your release line

Who is exposed: Broadcom Rabbitmq Server before 4.2.8, 4.3.2

Where it stands

  • No known exploitation

Connects to

Why it is Yellow

  • CVSS 7.5 high
  • Remotely exploitable without logging in

References

Original description

RabbitMQ is a messaging and streaming broker. From 3.13.0 until 3.13.15, 4.0.20, 4.1.11, and 4.2.6, the stream protocol stored the FrameMax value negotiated during the Tune handshake but did not compare it with an inbound frame's declared length before buffering the frame. With the stream plugin enabled, a remote client could therefore cause excessive memory pressure and denial of service by declaring an oversized frame. This issue is fixed in versions 3.13.15, 4.0.20, 4.1.11, and 4.2.6.

Last activity 25 Sep 2026. Patch Forecast updates every hour.