CVE-2026-29046

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.

CVSS

No CVSS.

References

Link	Resource
https://github.com/maximmasiutin/TinyWeb/commit/53aa8b6e5146491d7be57920e3fc50d7a34e4d5a
https://github.com/maximmasiutin/TinyWeb/security/advisories/GHSA-r3gf-pg2c-m7mc

Configurations

No configuration.

History

09 Mar 2026, 13:36

Type	Values Removed	Values Added
Summary		(es) TinyWeb es un servidor web (HTTP, HTTPS) escrito en Delphi para Win32. Antes de la versión 2.04, TinyWeb acepta valores de encabezado de solicitud y luego los mapea en variables de entorno CGI (HTTP_*). El analizador no rechazaba estrictamente los caracteres de control peligrosos en las líneas de encabezado y los valores de encabezado, incluyendo CR, LF y NUL, y no se defendía consistentemente contra formas codificadas como %0d, %0a y %00. Esto puede permitir la confusión de valores de encabezado a través de los límites del analizador y puede crear datos inseguros en el contexto de ejecución CGI. Este problema ha sido parcheado en la versión 2.04.

06 Mar 2026, 04:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-03-06 04:16

Updated : 2026-03-09 13:36

NVD link : CVE-2026-29046

Mitre link : CVE-2026-29046

CVE.ORG link : CVE-2026-29046

JSON object : View

Products Affected

No product.

CWE

CWE-20

Improper Input Validation

CWE-74

Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')

CWE-93

Improper Neutralization of CRLF Sequences ('CRLF Injection')

CWE-114

Process Control

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