Critical RCE Vulnerability in Apache HTTP Server: Everything You Need To Know
Critical RCE vulnerability CVE-2026-119618 found in Apache HTTP Server's HTTP/2 module.
A critical RCE vulnerability, CVE-2026-119618, has been discovered in Apache HTTP Server's HTTP/2 module due to a race condition in the assign_headers() function. This flaw can allow unauthenticated attackers to corrupt heap memory and achieve arbitrary code execution. Wiz data indicates that 64% of cloud environments have resources vulnerable to this flaw, and immediate patching to version 2.4.71 or later is advised, with temporary mitigation by disabling HTTP/2 support if patching is not immediately possible.
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The lesson from this incident
Full lessonA race condition in Apache HTTP Server's HTTP/2 module allows unauthenticated attackers to corrupt heap memory and execute arbitrary code, making this one of the most severe web server vulnerabilities in recent memory. With 64% of cloud environments exposed, the breadth of impact reflects how slowly organizations apply patches to widely deployed infrastructure components. The flaw requires no credentials to exploit, dramatically lowering the bar for attackers targeting internet-facing servers. Organizations without a mature vulnerability management program — including asset inventory, prioritized patching, and interim mitigations — are left fully exposed until a patch is applied.
What helps against this
How we list vendors
- Vulnerability scanning and prioritisation
You know which systems are vulnerable, and which ones to fix first.
- Automated patch management
Known holes get closed in days, not months.
- Cyber asset inventory
You cannot patch, monitor or protect the devices, cloud resources and accounts you do not know you have.
Indicators of Compromise
Extracted by AI from the linked source. Not reviewed by an editor. How this works
- cve — CVE-2026-119618
- cve — CVE-2026-111497