Bug 2571737 (CVE-2026-109163)

Summary: CVE-2026-109163 httpd: httpd: Denial of Service via stack-based buffer overflow in mod_vhost_alias
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: csutherl, jclere, pjindal, plodge, rhel-process-autobot, szappis, vchlup, watson-tool-maintainers
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in Apache HTTP Server's mod_vhost_alias module. A remote attacker could trigger a stack-based buffer overflow by sending a specially crafted HTTP request. This issue leads to a one-byte memory overwrite on the stack, which can crash the server process and result in a Denial of Service (DoS).
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
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Bug Depends On: 2571868    
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Description OSIDB Bzimport 2026-11-11 15:01:17 UTC
Stack-based buffer overflow vulnerability in Apache HTTP Server's mod_vhost_alias (after CVE-2026-63292)



This issue affects Apache HTTP Server: 2.4.69.