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CVE-2026-29046

CRITICAL CVSS 4.0: 9.2 EPSS 0.15%
Updated Mar 06, 2026
Tinyweb
Parameter Value
CVSS 9.2 (CRITICAL)
Fixed In 2.04
Type CWE-20 (Improper Input Validation (Неправильная проверка ввода)), CWE-93, CWE-74 (Injection (Внедрение)), CWE-114
Vendor Tinyweb
Public PoC No

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.

Attack Parameters

Attack Vector
Network
Атака возможна удалённо
Attack Complexity
Low
Легко эксплуатировать
Attack Requirements
None
Нет дополнительных условий
Privileges Required
None
Права не нужны
User Interaction
None
Не нужно действие пользователя

Impact Assessment

Confidentiality
None
Нет утечки данных
Integrity
High
Полная модификация данных
Availability
Low
Частичное нарушение работы

CVSS Vector v4.0

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