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.

INFO

Published Date :

2026-01-12T18:23:00.512Z

Last Modified :

2026-01-12T18:50:57.979Z

Source :

GitHub_M
AFFECTED PRODUCTS

The following products are affected by CVE-2026-22781 vulnerability.

Vendors Products
Maximmasiutin
  • Tinyweb
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-22781.

URL Resource
https://github.com/maximmasiutin/TinyWeb/commit/876b7e2887f4ea5be3e18bb2af7313f23a283c96 cve-icon cve-icon
https://github.com/maximmasiutin/TinyWeb/security/advisories/GHSA-m779-84h5-72q2 cve-icon cve-icon
https://www.masiutin.net/tinyweb-cve-2025-cgi-command-injection.html cve-icon cve-icon
Login to claim this CVE

CVSS Vulnerability Scoring System

Detailed values of each vector for above chart.
Attack Vector
Attack Complexity
Attack Requirements
Privileges Required
User Interaction
VS Confidentiality
VS Integrity
VS Availability
SS Confidentiality
SS Integrity
SS Availability