Known vulnerability record
CVE-2026-20253
Splunk Enterprise Missing Authentication for Critical Function Vulnerability
Summary
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.
Signals
Keep the signals separate
CVSS severitycriticalScore 9.8 · source cisco
EPSS probability96.9%Probability of exploitation in the next 30 days; not severity
CISA KEVKnown exploitedAdded 2026-06-18
Ransomware useunknownPreserved as known / unknown, not a truthy default
Timeline
Dates and provenance
- CVE published
- 2026-06-10
- CVE modified
- 2026-06-19
- KEV date added
- 2026-06-18
- Dataset fetched
- 2026-08-21T03:55:03.531Z
Sources
Original records
- https://www.cve.org/CVERecord?id=CVE-2026-20253 ↗
- https://nvd.nist.gov/vuln/detail/CVE-2026-20253 ↗
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-20253 ↗
Version history: normalized permanent page created 2026-08-20. Machine-enriched fields remain source-attributed.