Description
TinyWeb is a web server (HTTP, HTTPS) written in Delphi for Win32. TinyWeb HTTP Server before version 1.98 is vulnerable to OS command injection via CGI ISINDEX-style query parameters. The query parameters are passed as command-line arguments to the CGI executable via Windows CreateProcess(). An unauthenticated remote attacker can execute arbitrary commands on the server by injecting Windows shell metacharacters into HTTP requests. This vulnerability is fixed in 1.98.
References
https://github.com/maximmasiutin/TinyWeb/security/advisories/GHSA-m779-84h5-72q2
https://www.masiutin.net/tinyweb-cve-2025-cgi-command-injection.html
CVSS impact metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.8 · Critical
Information
Source identifier
Vulnerability status
Analyzed
Published
2026-01-12T19:16:03.787Z
4 days agoLast modified
2026-01-16T18:44:23.120Z
3 hours ago