Critical RCE Vulnerability in Apache HTTP Server

8.7 relevance

Critical RCE in Apache HTTP Server is highly technical, actionable for patching, and directly relevant to infrastructure security.

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Why It Matters

As a solutions architect managing cloud infrastructure, this vulnerability directly threatens your Apache deployments in GCP/AWS, especially if you run containerized workloads with HTTP/2 enabled—patching is urgent to prevent RCE and lateral movement to adjacent microservices or cloud metadata endpoints.

Key Takeaways

Upgrade Apache HTTP Server to version 2.4.71 or later immediately, or disable HTTP/2 support as a temporary mitigation to eliminate the attack vector.

Critical RCE Vulnerability in Apache HTTP Server

Summary

A critical race condition in Apache HTTP Server's HTTP/2 module (mod_http2) allows remote unauthenticated attackers to corrupt heap memory and achieve arbitrary code execution. The vulnerability (CVE-2026-119618) affects versions 2.4.55 through 2.4.70, with patches available in 2.4.71 and newer. Wiz data shows 64% of cloud environments have vulnerable resources, and 51% have publicly exposed instances, making this a widespread risk for lateral movement in containerized workloads.

Author

Merav Bar