GoKawiilApache HTTP Server race condition flaw enables remote code execution
Security researchers at Anthropic and Google Cloud's Vulnerability Research Team independently discovered CVE-2026-119618, a critical race condition in Apache HTTP Server's mod_http2 module. The bug lies in the assign_headers() function, where improper synchronization during concurrent thread execution can corrupt heap memory, potentially letting an unauthenticated remote attacker execute arbitrary code. It affects Apache versions 2.4.55 through 2.4.70, with a fix available in 2.4.71.
GoKawiil's interpretation of the reporting above, not reported fact.
No exploit code is publicly known and there are no confirmed in-the-wild attacks yet, but the severity rating and remote, unauthenticated nature of the flaw make it a high-priority patching target. Wiz Research data shows 64% of cloud environments contain vulnerable resources and 51% have publicly exposed instances, suggesting a sizable attack surface once exploitation techniques emerge. A compromised server could also become a foothold for lateral movement into adjacent cloud workloads, according to Wiz's analysis.
- CVE-2026-119618 is a critical race condition in Apache's mod_http2 module affecting versions 2.4.55–2.4.70.
- Successful exploitation could let unauthenticated attackers corrupt heap memory and execute arbitrary code.
- Wiz Research found 64% of cloud environments have vulnerable resources, with 51% publicly exposed; users should upgrade to 2.4.71 or later.
Source: wiz.io, 2026-11-12
Published there as: “Critical RCE Vulnerability in Apache HTTP Server”
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