Splunk Enterprise Missing Authentication for Critical Function Vulnerability. Actively exploited: CISA added this vulnerability to its Known Exploited Vulnerabilities catalog on 18/06/2026. Patch affected systems as an emergency.
| Package | Affected versions | Patched versions |
|---|---|---|
| splunk | ≥ 10.0.0, < 10.0.7≥ 10.2.0, < 10.2.4 | 10.0.710.2.4 |
In Splunk Enterprise 10.2 versions below 10.2.4 and 10 versions below 10.0.7, an unauthenticated user could create or truncate arbitrary files through a PostgreSQL sidecar service endpoint. The vulnerability exists because the PostgreSQL sidecar service endpoint lacks authentication controls, allowing any network-reachable user to invoke file operations without credentials. Splunk Enterprise versions 9.4 and earlier are not affected. If you cannot immediately upgrade to a fixed version, you can mitigate this vulnerability by disabling the PostgreSQL sidecar service.
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