cvedb.io
CVE-2026-27613
CRITICAL · CVSS 9.8
EPSS exploitation probability: 0%
Published 2026-02-25T23:16:21.743 · Last modified 2026-06-17T10:27:23.790

Summary

TinyWeb is a web server (HTTP, HTTPS) written in Delphi for Win32. A vulnerability in versions prior to 2.01 allows unauthenticated remote attackers to bypass the web server's CGI parameter security controls. Depending on the server configuration and the specific CGI executable in use, the impact is either source code disclosure or remote code execution (RCE). Anyone hosting CGI scripts (particularly interpreted languages like PHP) using vulnerable versions of TinyWeb is impacted. The problem has been patched in version 2.01. If upgrading is not immediately possible, ensure `STRICT_CGI_PARAMS` is enabled (it is defined by default in `define.inc`) and/or do not use CGI executables that natively accept dangerous command-line flags (such as `php-cgi.exe`). If hosting PHP, consider placing the

Affected products

ritlabs — tinyweb

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.