Splunk Enterprise <10.4.3/10.2.7/10.0.10: REST API Log Injection via SignalFlow
CVE-2026-76267 Published on October 7, 2026
Log Injection through the REST API in Splunk App for Splunk O11y Cloud
In Splunk Enterprise versions below 10.4.3, 10.2.7, and 10.0.10, a user that holds a role with the read_o11y_content capability could inject forged entries into the app log through the Representational State Transfer (REST) API. The vulnerability is possible because Splunk App for Splunk O11y Cloud does not neutralize user-supplied SignalFlow content before writing it to the app log.
Splunk Enterprise versions 9.4.x are not affected.
Weakness Type
Improper Output Neutralization for Logs
The software does not neutralize or incorrectly neutralizes output that is written to logs.
Products Associated with CVE-2026-76267
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Affected Versions
Splunk Enterprise:- Version 10.4 and below 10.4.3 is affected.
- Version 10.2 and below 10.2.7 is affected.
- Version 10.0 and below 10.0.10 is affected.