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Vulnerabilities

Vulnerability · USN-8933-1

rabbitmq-server vulnerabilities

Published Oct 15, 2026 · catalog updated Oct 17, 2026 · rabbitmq-server vulnerabilities

Open the advisory

Exploitation likelihood is not on this record for USN-8933-1. A missing EPSS score is not a low risk. Compare rabbitmq-server vulnerabilities with the linked advisory before you change production.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (rabbitmq-server vulnerabilities).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
  • EPSS is missing. A missing score is not a low risk.
Severity
Unknown—
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
Awaiting synchronization with FIRST
Remediation
Advisory link
Affected products
Ubuntu:22.04:LTS rabbitmq-server · Ubuntu:24.04:LTS rabbitmq-server · Ubuntu:26.04:LTS rabbitmq-server · Ubuntu:Pro:16.04:LTS rabbitmq-server · Ubuntu:Pro:18.04:LTS rabbitmq-server · Ubuntu:Pro:20.04:LTS rabbitmq-server

It was discovered that RabbitMQ Server incorrectly handled CORS wildcard origin configuration. An attacker could possibly use this issue to cause a cross-site request forgery attack. This issue only affected Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, Ubuntu 24.04 LTS, and Ubuntu 26.04 LTS. (CVE-2026-66070) It was discovered that RabbitMQ Server incorrectly handled TLS peer-certificate DNs in the management UI. An attacker could possibly use this issue to cause a cross-site scripting attack. (CVE-2026-66077) It was discovered that RabbitMQ Server incorrectly handled AMQP 1.0 arrays with zero-width element constructors. An attacker could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, Ubuntu 24.04 LTS, and Ubuntu 26.04 LTS. (CVE-2026-66079) It was discovered that RabbitMQ Server trust-store plugin incorrectly validated client certificates. An attacker could possibly use this issue to bypass TLS client authentication. This issue only affected Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, Ubuntu 24.04 LTS, and Ubuntu 26.04 LTS. (CVE-2026-67231) It was discovered that RabbitMQ Server incorrectly handled WebSocket frame sizes. An attacker could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, Ubuntu 24.04 LTS, and Ubuntu 26.04 LTS. (CVE-2026-67232) It was discovered that RabbitMQ Server incorrectly handled content-header body sizes. An attacker could possibly use this issue to cause a denial of service. (CVE-2026-67235) It was discovered that RabbitMQ Server incorrectly stored credentials in an insecure cookie. An attacker could possibly use this issue to expose sensitive information. This issue only affected Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, Ubuntu 24.04 LTS, and Ubuntu 26.04 LTS. (CVE-2026-67236) It was discovered that RabbitMQ Server incorrectly handled OAuth bearer tokens in bootstrap JavaScript. An attacker could po

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • Ubuntu:22.04:LTS rabbitmq-server0 → 3.9.27-0ubuntu0.6
  • Ubuntu:24.04:LTS rabbitmq-server0 → 3.12.1-1ubuntu1.7
  • Ubuntu:26.04:LTS rabbitmq-server0 → 4.0.5-10ubuntu5.2
  • Ubuntu:Pro:16.04:LTS rabbitmq-server0 → 3.5.7-1ubuntu0.16.04.4+esm3
  • Ubuntu:Pro:18.04:LTS rabbitmq-server0 → 3.6.10-1ubuntu0.5+esm1
  • Ubuntu:Pro:20.04:LTS rabbitmq-server0 → 3.8.3-0ubuntu0.3+esm2

How to fix USN-8933-1

  • Recommended remediation

    A patch or advisory reference is linked. Open the original publisher for availability by product version.

  • Official advisories

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

Exploitation likelihood is not on this record for USN-8933-1. A missing EPSS score is not a low risk. Compare rabbitmq-server vulnerabilities with the linked advisory before you change production.

Which versions are affected?

Compare what you have installed with 0 → 3.9.27-0ubuntu0.6, 0 → 3.12.1-1ubuntu1.7, 0 → 4.0.5-10ubuntu5.2, 0 → 3.5.7-1ubuntu0.16.04.4+esm3, 0 → 3.6.10-1ubuntu0.5+esm1, 0 → 3.8.3-0ubuntu0.3+esm2. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS is not on this record yet. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Technology hubs

Ubuntu security

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Oct 15, 2026 · OpenSSF OSV / OSV Scanner

    Detected

    It was discovered that RabbitMQ Server incorrectly handled CORS wildcard origin configuration. An attacker could possibly use this issue to cause a cross-site request forgery attack. This issue only affected Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, Ubuntu 24.04 LTS, and Ubuntu 26.04 LTS. (CVE-2026-66070) It was discovered that RabbitMQ Server incorrectly handled TLS peer-certificate D

  2. Oct 17, 2026 · OpenSSF OSV / OSV Scanner

    Fix available

    rabbitmq-server fixed in 3.5.7-1ubuntu0.16.04.4+esm3; rabbitmq-server fixed in 3.6.10-1ubuntu0.5+esm1; rabbitmq-server fixed in 3.8.3-0ubuntu0.3+esm2; rabbitmq-server fixed in 3.9.27-0ubuntu0.6

  3. Oct 17, 2026 · OpenSSF OSV / OSV Scanner

    Fix available

    rabbitmq-server fixed in 3.5.7-1ubuntu0.16.04.4+esm3

  4. Oct 17, 2026 · OpenSSF OSV / OSV Scanner

    Fix available

    rabbitmq-server fixed in 3.6.10-1ubuntu0.5+esm1

  5. Oct 17, 2026 · OpenSSF OSV / OSV Scanner

    Fix available

    rabbitmq-server fixed in 3.8.3-0ubuntu0.3+esm2

  6. Oct 17, 2026 · OpenSSF OSV / OSV Scanner

    Fix available

    rabbitmq-server fixed in 3.9.27-0ubuntu0.6

  7. Oct 17, 2026 · OpenSSF OSV / OSV Scanner

    Fix available

    rabbitmq-server fixed in 3.12.1-1ubuntu1.7

  8. Oct 17, 2026 · OpenSSF OSV / OSV Scanner

    Fix available

    rabbitmq-server fixed in 4.0.5-10ubuntu5.2

  9. Oct 17, 2026 · OpenSSF OSV / OSV Scanner

    Updated

    It was discovered that RabbitMQ Server incorrectly handled CORS wildcard origin configuration. An attacker could possibly use this issue to cause a cross-site request forgery attack. This issue only affected Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, Ubuntu 24.04 LTS, and Ubuntu 26.04 LTS. (CVE-2026-66070) It was discovered that RabbitMQ Server incorrectly handled TLS peer-certificate D

Sources

References

Freshness

Last verified in this catalog Oct 17, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.