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CVE-2026-67237

9.3, critical

rabbitmq-server Cross-Site Scripting Vulnerability

NVD (opens in a new tab) CVE.org (opens in a new tab)
CVSS
9.3, critical critical CVSS v3.1
EPSS, next 30 days
0.5% higher than 40.3% of scored CVEs
Exploitation
No public evidence
Published
25 Sept 202626 days ago

Description

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. The endpoint is exposed before authentication only when management.oauth_enabled is true, and exploitation through the cookie path additionally requires the attacker to plant an access_token cookie on the management host. This issue is fixed in versions 4.2.8 and 4.3.2.

Details

Vendor
Rabbitmq
Product
rabbitmq-server
Weakness
CWE-79 (opens in a new tab)
Status
Analyzed
Updated
20 Oct 2026
Assigner
security-advisories@github.com

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N

References 5

Patches and fixes 4

Advisories 1

The kind is read from NVD's tags where present and from the shape of the URL otherwise, so treat it as a hint.

Other Rabbitmq CVEs

Every Rabbitmq CVE we hold

Same vendor in what we hold, not a known link between the flaws.

  • CVE-2026-106121 The RabbitMQ Java client library allows Java and JVM-based applications to connect to and interact with RabbitMQ nodes EPSS 0.5% 7.5, high
  • CVE-2026-106122 The RabbitMQ Java client library allows Java and JVM-based applications to connect to and interact with RabbitMQ nodes EPSS 0.5% 7.5, high
  • CVE-2026-67410 rabbitmq-server Exposure of Sensitive Information Vulnerability EPSS 0.4% 7.1, high
  • CVE-2026-67411 rabbitmq-server Incorrect Authorization Vulnerability EPSS 0.3% 7.1, high
  • CVE-2026-67412 rabbitmq-server Missing Authorization Vulnerability EPSS 0.3% 7.1, high
  • CVE-2026-67223 RabbitMQ is a messaging and streaming broker EPSS 0.4% 7.1, high
  • CVE-2026-67407 rabbitmq-server Missing Authorization Vulnerability EPSS 0.2% 7.1, high
  • CVE-2026-67225 rabbitmq-server Allocation of Resources Without Limits or Throttling Vulnerability EPSS 0.3% 7.5, high

Beyond this page

Is CVE-2026-67237 in your network?

This page tells you how dangerous CVE-2026-67237 is out there. Whether it sits on one of your devices, only a scan of your own network can tell. That is what our systems do, every day, for the companies we protect.

  • EXYS7600 OCELOT

    Find it before attackers do

    Ocelot scans your network on a schedule and reports every vulnerability it finds by its CVE identifier, with its CVSS score and how many of your hosts are affected. A finding like CVE-2026-67237 comes with the devices to patch.

    Learn more about EXYS7600 OCELOT

  • EXYS7950 KONDRA

    Detect it if it's exploited

    Until the patch is applied, Kondra monitors your network, events and endpoints in real time. It keeps an inventory of the software installed on every endpoint, and its anomaly detection rules flag what an attacker does once inside.

    Learn more about EXYS7950 KONDRA
Check your exposure

Assembled from the NVD 2.0 API, the CISA Known Exploited Vulnerabilities Catalog and FIRST EPSS. Scores are as of our last collection on 21 Oct 2026, not the live upstream state.