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.
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Fixes

Solution

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Workaround

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History

Mon, 12 Jan 2026 19:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Mon, 12 Jan 2026 18:30:00 +0000

Type Values Removed Values Added
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.
Title TinyWeb CGI Command Injection
Weaknesses CWE-78
References
Metrics cvssV4_0

{'score': 10, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H'}


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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-01-12T18:50:57.979Z

Reserved: 2026-01-09T18:27:19.388Z

Link: CVE-2026-22781

cve-icon Vulnrichment

Updated: 2026-01-12T18:50:53.774Z

cve-icon NVD

Status : Received

Published: 2026-01-12T19:16:03.787

Modified: 2026-01-12T19:16:03.787

Link: CVE-2026-22781

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses