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Known exploited vulnerabilities

Splunk vulnerabilities attackers have used

Every Splunk vulnerability in CISA's Known Exploited Vulnerabilities catalog, newest first, with the federal due date and whether it fed ransomware campaigns.

The short answer

CISA lists 1 Splunk vulnerability as exploited in the wild, 1 of them added in the last 12 months. The most recent is CVE-2026-20253, added Jun 18, 2026. Enterprise has the most entries (1).

In KEV, all time
1
Added, last 12 months
1
Used in ransomware
0
New CVEs this week
0

Every Splunk entry in CISA KEV

  1. CVE-2026-20253

    Added · due

    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.

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