CVE-2026-22781— TinyWeb CGI Command Injection
Quick assessment
Affected
maximmasiutin TinyWeb
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
TinyWeb Server是Maxim Masiutin个人开发者的一个web服务器。 TinyWeb Server 1.98之前版本存在操作系统命令注入漏洞，该漏洞源于通过CGI ISINDEX样式查询参数传递命令，可能导致OS命令注入攻击。
Possible ATT&CK Techniques 1 AI
T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-22781
Vulnerability Information
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Vulnerability Title
TinyWeb CGI Command Injection
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
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
Source: CVE Program / CVE List V5
Vulnerability Type
OS命令中使用的特殊元素转义处理不恰当(OS命令注入)
Source: CVE Program / CVE List V5
Vulnerability Title
TinyWeb Server 操作系统命令注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
TinyWeb Server是Maxim Masiutin个人开发者的一个web服务器。 TinyWeb Server 1.98之前版本存在操作系统命令注入漏洞，该漏洞源于通过CGI ISINDEX样式查询参数传递命令，可能导致OS命令注入攻击。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| maximmasiutin | TinyWeb | < 1.98 | - |
|
II. Public POCs for CVE-2026-22781
| # | POC Description | Source Link | Shenlong Link |
|---|
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News Coverage for CVE-2026-22781 (1)
IV. Related Vulnerabilities
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CVE-2026-67185
TinyWeb 0.0.8 Path Traversal via URL Path Component -
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TinyWeb 0.0.8 Null Pointer Dereference DoS via Malformed HTT -
CVE-2026-67183
TinyWeb 0.0.8 Memory Leak DoS via HTTP Request Handling -
CVE-2026-29046
TinyWeb: HTTP Header Control Character Injection into CGI En -
CVE-2026-28497
TinyWeb: Integer Overflow in `_Val` (HTTP Request Smuggling)
Same vendor: maximmasiutin
-
CVE-2026-29046
TinyWeb: HTTP Header Control Character Injection into CGI En -
CVE-2026-28497
TinyWeb: Integer Overflow in `_Val` (HTTP Request Smuggling) -
CVE-2026-27633
TinyWeb has Unbounded Content-Length Memory Exhaustion (DoS) -
CVE-2026-27630
TinyWeb vulnerable to Remote Denial of Service via Thread/Co -
CVE-2026-27613
CGI Parameter Injection (Bypass of STRICT_CGI_PARAMS and Esc
Same weakness: CWE-78
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CVE-2026-57998
better-npm-audit OS Command Injection via registry flag -
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UAC < 3.3.0 Command Injection via User Substitution in parse -
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UAC < 3.3.0 Command Injection via command_collector.sh -
CVE-2026-41449
UAC < 3.3.0 Command Injection via run_command.sh -
CVE-2026-47359
Apache CloudStack: OS Command Injection due to unsanitized m
V. Comments for CVE-2026-22781
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