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Servers and applications

CVE-2021-26117

The optional ActiveMQ LDAP login module can be configured to use anonymous access to the LDAP server. In this case, for Apache ActiveMQ Artemis prior to version 2.16.0 and Apache ActiveMQ prior to versions 5.16.1 and 5.15.14, the anonymous context is used to verify a valid users password in error, resulting in no check on the password.

Severity
High 7.5
Published
27 Jan 2021
Last changed
17 Jun 2026
Added to UpHeron
1 Nov 2026
Fixed in
2.16.0, 5.15.14, 5.16.1
Sources
NVD

Affected software

SoftwareAffected versions
Apache ActiveMQServers and applications · cpe:a:apache:activemq
  • From 5.15.0 before 5.15.14
  • From 5.16.0 before 5.16.1
Apache ActiveMQ ArtemisServers and applications · cpe:a:apache:artemis
  • Every version before 2.16.0

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2021-26117
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2021-26117