VULNERABILITY INTELLIGENCE

CVE-2026-22781

CVSS score9.8 CRITICAL

EPSS probability2.44%

CISA KEVNot currently listed

Published2026-01-12

Last modified2026-06-17

CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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.

Weakness classification

security-advisories@github.com: CWE-78

Primary references

security-advisories@github.com — Patch
security-advisories@github.com — Third Party Advisory
security-advisories@github.com — Third Party Advisory