ZDF
Sign inSign up

Vulnerabilities

Vulnerability · CVE-2021-22116

RabbitMQ all versions prior to 3.8.16 are prone to a denial of service vulnerability due to improper input validation in AMQP 1.0 client connection endpoint.

Published Jun 8, 2021 · catalog updated Jun 17, 2026 · RabbitMQ all versions prior

Last checked Nov 2, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2021-22116. EPSS is 1.39%. Act only if a listed version of RabbitMQ all versions prior is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (RabbitMQ all versions prior).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.

Same product and reporting

Severity
High7.5
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
1.39%
Remediation
Version ranges on file
Affected products
cpe debian/debian linux · cpe vmware/rabbitmq

RabbitMQ all versions prior to 3.8.16 are prone to a denial of service vulnerability due to improper input validation in AMQP 1.0 client connection endpoint. A malicious user can exploit the vulnerability by sending malicious AMQP messages to the target RabbitMQ instance having the AMQP 1.0 plugin enabled.

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.

  • cpe debian/debian linux9.0
  • cpe vmware/rabbitmq< 3.8.16

How to fix CVE-2021-22116

What to do

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

Should you patch?

No confirmed exploitation is on record for CVE-2021-22116. EPSS is 1.39%. Act only if a listed version of RabbitMQ all versions prior is installed.

Which versions are affected?

Compare what you have installed with debian/debian linux 9.0. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-20: Improper Input Validation; CWE-400: Uncontrolled Resource Consumption. EPSS 1.39%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Technology hubs

RabbitMQ securityVMware 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. Jun 8, 2021 · Monitored products — high

    Detected

    RabbitMQ all versions prior to 3.8.16 are prone to a denial of service vulnerability due to improper input validation in AMQP 1.0 client connection endpoint. A malicious user can exploit the vulnerability by sending malicious AMQP messages to the target RabbitMQ instance having the AMQP 1.0 plugin enabled.

  2. Jun 17, 2026 · Monitored products — high

    Updated

    RabbitMQ all versions prior to 3.8.16 are prone to a denial of service vulnerability due to improper input validation in AMQP 1.0 client connection endpoint. A malicious user can exploit the vulnerability by sending malicious AMQP messages to the target RabbitMQ instance having the AMQP 1.0 plugin enabled.

Sources

  • Monitored products — highVendor advisoryCVE-2021-22116

    RabbitMQ all versions prior to 3.8.16 are prone to a denial of service vulnerability due to improper input validation in AMQP 1.0 client connection endpoint. A malicious user can exploit the vulnerability by sending malicious AMQP messages to the target RabbitMQ instance having the AMQP 1.0 plugin enabled.

    nvd.nist.gov
  • AlienVault OTXThreat intelligenceCVE-2021-22116
    otx.alienvault.com

References

Freshness

Last verified in this catalog Nov 2, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • AlienVault OTXNov 2, 2026
  • Monitored products — highNov 2, 2026