CVE-2026-24469: Path Traversal in C++ HTTP Server

Successful exploitation of CVE-2026-24469 allows an attacker to read any file accessible to the user account running the C++ HTTP Server process. This includes sensitive configuration files, source code, and potentially even user data if the server is configured to store such information. The attacker could gain valuable insights into the server's internal workings and potentially use this information to further compromise the system. While the vulnerability is not directly exploitable for remote code execution, the information gained from file access could be leveraged for other attacks. The blast radius is limited to the server itself and any data it has access to.

1. Reserved2026-01-23
2. Published2026-01-24
3. Modified2026-01-26
4. EPSS updated2026-03-23

The primary mitigation for CVE-2026-24469 is to upgrade to version 1.0.1 of C++ HTTP Server. If upgrading is not immediately feasible, consider implementing a Web Application Firewall (WAF) or reverse proxy to filter malicious HTTP GET requests containing ../ sequences. Restrict file access permissions for the user account running the server to only the necessary files and directories. Thoroughly review the server's configuration to ensure that sensitive files are not exposed. After upgrading, confirm the fix by attempting to access files outside the intended root directory via HTTP GET requests; access should be denied.