Medium [CVE-2026-76340] Missing Authorization for Reloading Token-Signing Keys through the REST API in Splunk Enterprise
This medium-severity Splunk advisory covers CVE-2026-76340 affecting Splunk Enterprise.
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Summary
In Splunk Enterprise 10.4 versions below 10.4.2, an unauthenticated user could cause Splunk Enterprise to reload token-signing keys through the Representational State Transfer (REST) API. The vulnerability does not affect Splunk Enterprise versions below 10.4.
The vulnerability is possible because the REST API does not require authentication or the change_authentication capability for the token-key reload action. For more information see Define roles on the Splunk platform with capabilities ( ) in the Splunk documentation.
- Splunk Enterprise 10.4 before 10.4.2
Official advisory · high-confidence parse· fetched 2 months ago·verify at source
- 10.4.2
Official advisory · high-confidence parse· fetched 2 months ago·verify at source
Mitigation
Upgrade to a fixed release: 10.4.2. 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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