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Vulnerabilities
Vulnerability

CVE-2026-20253

Reference data from vuln.mlab.sh, coverage from our own index.

CVSS
9.8 Critical
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Risk score
100.0
Known exploited
CISA KEV
Published
2026-06-10
Status
Published

In Splunk Enterprise 10.2 versions below 10.2.4 and 10 versions below 10.0.7, an unauthenticated user could create or truncate arbitrary files through a PostgreSQL sidecar service endpoint. The vulnerability exists because the PostgreSQL sidecar service endpoint lacks authentication controls, allowing any network-reachable user to invoke file operations without credentials. Splunk Enterprise versions 9.4 and earlier are not affected. If you cannot immediately upgrade to a fixed version, you can mitigate this vulnerability by disabling the PostgreSQL sidecar service.

Weaknesses

CWE-306

Coverage 6

Advisories and references