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Technology4h 3m ago

Splunk published an advisory for CVE-2026-20253, a pre-authentication RCE vulnerability in Splunk Enterprise's PostgreSQL Sidecar Service.

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Worldwide (Splunk Enterprise on AWS is vulnerable by default)

Who
Splunk, WatchTowr Labs
What
Splunk published an advisory for CVE-2026-20253, a pre-authentication RCE vulnerability in Splunk Enterprise's PostgreSQL Sidecar Service.
When
Fri, 12 Jun 2026 20:37:11 GMT · 4h 3m ago
Where
Worldwide (Splunk Enterprise on AWS is vulnerable by default) ·
Why
The PostgreSQL Sidecar Service endpoint lacks authentication controls, allowing any network-reachable user to invoke file operations without credentials.
The Frontline Impact

How this affects you

This vulnerability allows for arbitrary file creation and truncation, and ultimately remote code execution, which could be exploited by attackers to compromise Splunk Enterprise deployments.

Story chain

6 events in this thread
  1. Technology4h 3m ago
    Splunk published an advisory for CVE-2026-20253, detailing a pre-authentication Remote Code Execution (RCE) vulnerability in its PostgreSQL Sidecar Service.
    Open article
  2. Currently Reading4h 3m ago
    Splunk published an advisory for CVE-2026-20253, a pre-authentication RCE vulnerability in Splunk Enterprise's PostgreSQL Sidecar Service.
  3. Technology4h 3m ago
    Splunk published an advisory for CVE-2026-20253, a pre-authentication remote code execution vulnerability in the PostgreSQL Sidecar Service of Splunk Enterprise.
    Open article
  4. Technology4h 3m ago
    Splunk published an advisory for CVE-2026-20253, a pre-authentication Remote Code Execution vulnerability in Splunk Enterprise.
    Open article
  5. Technology4h 3m ago
    Splunk published an advisory on June 10th regarding CVE-2026-20253, a pre-authentication remote code execution vulnerability in its Enterprise product's PostgreSQL Sidecar Service.
    Open article
  6. Technology4h 3m ago
    Splunk published an advisory for CVE-2026-20253, detailing a pre-authentication remote code execution vulnerability in the PostgreSQL Sidecar Service.
    Open article

Verified Sources & Citations