Critical Apache HTTP Server Vulnerability: What Defenders Need to Know On November 11, 2026, the Apache Software Foundation disclosed CVE-2026-119618, a critical race condition in mod_http2, the module that provides HTTP/2 support in Apache HTTP Server. According to Apache’s advisory, the flaw can corrupt heap memory and may lead to remote code execution on the server. It affects Apache HTTP Server 2.4.55 through 2.4.70 and standalone mod_h2 releases 2.0.8 through 2.0.42.

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