Unsecured Splunk Flaw Could Allow Unauthenticated Writes and Remote Code Execution
TL;DR Summary
Security updates fix CVE-2026-20253 in Splunk Enterprise, a critical flaw that allowed unauthenticated file operations and potential pre-auth remote code execution via the PostgreSQL sidecar endpoint; affected versions include 10.0.0–10.0.6 (fixed in 10.0.7) and 10.2.0–10.2.3 (fixed in 10.2.4); Splunk Cloud and Splunk 10.4 are not affected. An attacker could abuse /backup and /restore to drop malicious SQL and write a payload to the file system, escalating to code execution; users should upgrade immediately.
Topics:technology#cve-2026-20253#postgresql-sidecar#remote-code-execution#security#splunk#unauthenticated-access
- Critical Splunk Enterprise Flaw Lets Attackers Run Code Without Authentication The Hacker News
- Why Use App-Level Auth When Every Database Has Auth? (Splunk Enterprise CVE-2026-20253 Pre-Auth RCE) watchTowr Labs
- Splunk, Palo Alto Networks Patch Severe Vulnerabilities SecurityWeek
- Multiple Splunk Enterprise Vulnerabilities Allow Attackers to Execute Malicious Script CyberSecurityNews
- Critical Splunk Enterprise Flaw Enables Unauthenticated Remote Code Execution cyberpress.org
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