Remote Code Execution and Denial of Service Affecting Apache HTTP Server
A vulnerability affecting Apache HTTP Server would allow an authenticated attacker to cause remote arbitrary code execution or denial of service on affected systems.
Description
Technical context and vulnerability details
Apache HTTP Server is an open source web server developed by the Apache Software Foundation, widely used for hosting and distributing content over the Internet. This system is affected by a vulnerability labeled CVE-2026-23918 resulting from a “Double Free” memory management error when processing the HTTP/2 protocol. Exploitation of this vulnerability would allow an authenticated attacker to send specially crafted HTTP/2 requests to corrupt server memory, potentially leading to remote arbitrary code execution or denial of service. It is classified high with a severity score of 8.8 according to CVSS V3.1.
Potential Risks & Impact
Potential consequences upon exploitation
- Remote Arbitrary Code Execution;
- Data privacy breach;
- Compromise of system integrity;
- Denial of Service (DoS);
Affected systems
Products, components and targeted versions
- Apache HTTP Server version 2.4.66;
Recommended Remediations & Actions
Immediate actions and recommended mitigations
- Update Apache HTTP Server to its latest stable version;
Sources & External Links
Vendor security advisories and documentation
Advisory Specifications
CSIRT Emergency Response
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