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CVE-2026-202539.8/CRITICALEPSS 94.0%CISA KEV
2026-06-10

Splunk Enterprise Unauthenticated Arbitrary File Creation and RCE via PostgreSQL Sidecar Service (CVE-2026-20253)

[Affected Scope] Splunk Enterprise versions 10.2.x below 10.2.4 and 10.0.x below 10.0.7 (versions 9.4 and earlier are unaffected)

[Impact] An unauthenticated remote attacker can access the PostgreSQL sidecar service endpoint to create or truncate arbitrary files, potentially leading to Remote Code Execution (RCE)

[Mitigation] Immediately upgrade to patched versions (10.2.4+, 10.0.7+) or disable the PostgreSQL sidecar service if an immediate upgrade is not feasible