CVE-2026-20253 - Splunk Enterprise Missing Authentication for Critical Function Vulnerability
Splunk Enterprise contains a missing authentication for critical function vulnerability which could allow an unauthenticated user to create or truncate arbitrary files through a PostgreSQL sidecar service endpoint.
- Severity
- critical
- Product
- Splunk Enterprise
- Published
- 2026-06-18
- EPSS
- 0.969
- CISA KEV
- Known exploited
- Ransomware
- Known campaign use
References and validation
- https://github.com/search?q=CVE-2026-20253&type=repositories
- https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2026/CVE-2026-20253.yaml
- https://nvd.nist.gov/vuln/detail/CVE-2026-20253
Entries are refreshed from CISA KEV and FIRST EPSS. Validate applicability before testing.