CVE-2026-24469 C++ HTTP Server has Critical Path Traversal Vulnerability in RequestHandler Allowing Arbitrary File Read
An unauthenticated remote attacker can read arbitrary files from the server filesystem via path traversal in the HTTP request handler.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-24469?
CVE-2026-24469 is a high-severity path traversal vulnerability in frustratedProton http-server, published on 24 Jan 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
C++ HTTP Server is an HTTP/1.1 server built to handle client connections and serve HTTP requests. Versions 1.0 and below are vulnerable to Path Traversal via the RequestHandler::handleRequest method. This flaw allows an unauthenticated, remote attacker to read arbitrary files from the server's filesystem by crafting a malicious HTTP GET request containing ../ sequences. The application fails to sanitize the filename variable derived from the user-controlled URL path, directly concatenating it to the files_directory base path and enabling traversal outside the intended root. No patch was available at the time of publication.
Weakness: CWE-22
Which versions are affected by CVE-2026-24469?
How do I fix CVE-2026-24469?
No fix has been published for CVE-2026-24469 yet. Limit exposure of the affected software until one is available.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2026-24469 being exploited?
There is no known exploitation of CVE-2026-24469 in the wild and no public exploit code.