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Technology5h 23m ago

Splunk published an advisory for CVE-2026-20253, detailing a pre-authentication Remote Code Execution (RCE) vulnerability in its PostgreSQL Sidecar Service.

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Who
Splunk, watchTowr Labs
What
Splunk published an advisory for CVE-2026-20253, detailing a pre-authentication Remote Code Execution (RCE) vulnerability in its PostgreSQL Sidecar Service.
When
Fri, 12 Jun 2026 20:37:11 GMT · 5h 23m ago
Where
not specified ·
Why
The vulnerability exists because 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 attackers to create and truncate arbitrary files on the Splunk filesystem, and in cases of Splunk Enterprise on AWS, it is vulnerable out of the box, potentially leading to remote code execution and full system compromise.

Story chain

6 events in this thread
  1. Currently Reading5h 23m ago
    Splunk published an advisory for CVE-2026-20253, detailing a pre-authentication Remote Code Execution (RCE) vulnerability in its PostgreSQL Sidecar Service.
  2. Technology5h 23m ago
    Splunk published an advisory for CVE-2026-20253, a pre-authentication RCE vulnerability in Splunk Enterprise's PostgreSQL Sidecar Service.
    Open article
  3. Technology5h 23m 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. Technology5h 23m ago
    Splunk published an advisory for CVE-2026-20253, a pre-authentication Remote Code Execution vulnerability in Splunk Enterprise.
    Open article
  5. Technology5h 23m 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. Technology5h 23m 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