CVE-2026-29046 — TinyWeb: HTTP Header Control Character Injection into CGI Environment
TinyWeb is a web server (HTTP, HTTPS) written in Delphi for Win32. Prior to version 2.04, TinyWeb accepts request header values and later maps them into CGI environment variable…
Published: 2026-03-06 · CVSS: 9.2 · CVSS 4.0
TinyWeb is a web server (HTTP, HTTPS) written in Delphi for Win32. Prior to version 2.04, TinyWeb accepts request header values and later maps them into CGI environment variables (HTTP_*). The parser did not strictly reject dangerous control characters in header lines and header values, including CR, LF, and NUL, and did not consistently defend against encoded forms such as %0d, %0a, and %00. This can enable header value confusion across parser boundaries and may create unsafe data in the CGI execution context. This issue has been patched in version 2.04.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7