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Medium5.3Splunk

Medium [CVE-2021-33845] Splunk Enterprise: The Splunk Enterprise REST API allows enumeration of usernames via the lockout error message.

This medium-severity Splunk advisory covers CVE-2021-33845 affecting Splunk Enterprise.

CVE-2021-33845 Published May 6, 2022Updated by vendor Jun 17, 2026
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SplunkSplunk Enterprise
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Summary

The Splunk Enterprise REST API allows enumeration of usernames via the lockout error message. The potential vulnerability impacts Splunk Enterprise instances before 8.1.7 when configured to repress verbose login errors.

Affected versions
  • 8.1.7

Official advisory · high-confidence parse· fetched 2 months ago·verify at source

Fixed versions
  • 8.1.7

Official advisory · high-confidence parse· fetched 2 months ago·verify at source

Mitigation

Upgrade to a fixed release: 8.1.7. That is the remediation for this advisory.

The vendor advisory may list additional interim mitigations or workarounds not captured here — review it before change work.

Official advisory · high-confidence parse· fetched 2 months ago·verify at source

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