🚨 CRITICAL ALERT: Apache Druid RCE (CVSS 9.8) - All Versions Affected
The Tech:
Apache Druid versions 0.17.0 through 35.x (all versions) are impacted by a critical remote code execution vulnerability (CVE-2026-23906, CVSS 9.8). This flaw allows attackers to execute arbitrary code with severe consequences.
The Real World View:
Think of Apache Druid as a high-performance data analytics engine. This vulnerability means that anyone can inject malicious commands directly into the engine's core, potentially corrupting or exfiltrating vast amounts of critical data.
Action:
Immediately upgrade Apache Druid instances to a non-vulnerable version as soon as a patch is available. Until then, implement strict network access controls, limit privileges for Druid processes, and monitor for suspicious activity.
Apache Druid versions 0.17.0 through 35.x are affected by a critical authentication bypass vulnerability (CVE-2026-23906) when using the druid-basic-security extension with LDAP authentication. If the underlying LDAP server permits anonymous binds, an attacker can bypass authentication by providing an existing username with an empty password, allowing unauthorized access to Druid resources. The vulnerability stems from improper validation of LDAP authentication responses when anonymous binds are permitted. To mitigate this issue, disable anonymous bind on your LDAP server or upgrade Apache Druid to version 36.0.0 or later.
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