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.
References (1)
Core 1
Core References
Vendor Advisory x_refsource_confirm
https://github.com/frustratedProton/http-server/security/advisories/GHSA-qp54-6gfq-3gff
Scores
CVSS v3
7.5
EPSS
0.0059
EPSS Percentile
43.5%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
yes
Technical Impact
partial
Details
CWE
CWE-22
Status
published
Products (1)
frustratedProton/http-server
<= 1.0
Published
Jan 24, 2026
Tracked Since
Feb 18, 2026