CVE-2026-20253

CISA KEV
ACT NOW Priority: 0.00 BB Relevance: 10/100
Published: N/A Modified: N/A First seen: 2026-10-29 Status: pending_score

Description

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.

CISA Known Exploited Vulnerability

Vendor / Product Splunk — Enterprise
Date Added 2026-06-18
Remediation Due 2026-06-21
https://advisory.splunk.com/advisories/SVD-2026-0603 ; BOD 26-04: https://www.cisa.gov/news-events/directives/bod-26-04-prioritizing-security-updates-based-risk ; Forensics Triage Requirements: https://www.cisa.gov/news-events/directives/bod-26-04-implementation-guidance-prioritizing-security-updates-based-risk ; https://nvd.nist.gov/vuln/detail/CVE-2026-20253

Weakness Classification (1)

Affected Software (2)

VendorProductVersion
splunk splunk 10.0.0 – 10.0.7
splunk splunk 10.2.0 – 10.2.4

Bug Bounty Relevance

10 / 100
✓ Known exploited (KEV)
✓ High exploitation probability

CVSS Score

Unscored

EPSS — Exploitation Probability

96.94%
Raw Score 0.969390
Percentile 99.9%
Date 2026-10-28

Intelligence Sources

kev ref →