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Critical · 10.0 CVE-2026-22781 EUVD-2026-2005

TinyWeb CGI Command Injection

Published Jan 12, 2026 · Updated Jan 12, 2026 · Assigned by GitHub_M

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.

Affected products

VendorProductAffectedFixed
maximmasiutin TinyWeb < 1.98 —

References