Status: KEV | Advisory ID: CVE-2026-20253
| CVE | CVE-2026-20253 |
| Affected products | Splunk Enterprise |
| Exploitation status | Listed in CISA's Known Exploited Vulnerabilities (KEV) catalog, indicating confirmed active exploitation. |
| Classified as | CWE-306 (Missing Authentication for Critical Function) |
| KEV listing | Added to CISA's Known Exploited Vulnerabilities (KEV) catalog on 2026-06-18. |
| Exploitation prediction (EPSS) | 97% probability of exploitation in the next 30 days (100% percentile) -- FIRST.org's EPSS model. |
| Federal remediation deadline | 2026-06-21 (CISA KEV, Binding Operational Directive). |
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.
| Source | Reference |
|---|---|
| NVD | https://nvd.nist.gov/vuln/detail/CVE-2026-20253 |