CVE-2026-22781: critical vulnerability in maximmasiutin TinyWeb
TinyWeb CGI Command Injection
Published
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
28Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 10epss 2.4%
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.
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
Affected products
maximmasiutin · TinyWebRelated CVEs — maximmasiutin TinyWeb
In the same product, most dangerous first.
CVE-2026-27613CRITICALCGI Parameter Injection (Bypass of STRICT_CGI_PARAMS and EscapeShellParam)EPSS 0.9%CVE-2026-28497CRITICALTinyWeb: Integer Overflow in `_Val` (HTTP Request Smuggling)EPSS 0.5%CVE-2026-27633HIGHTinyWeb has Unbounded Content-Length Memory Exhaustion (DoS)EPSS 0.5%CVE-2026-27630HIGHTinyWeb vulnerable to Remote Denial of Service via Thread/Connection Exhaustion (Slowloris)EPSS 0.5%CVE-2026-29046CRITICALTinyWeb: HTTP Header Control Character Injection into CGI EnvironmentEPSS 0.4%