CVE-2026-24489: Happyhackingspace Gakido

Medium severity, CVSS 5.3. EPSS: 0.4% chance of exploitation in the next 30 days.

Gakido is a Python HTTP client focused on browser impersonation and anti-bot evasion. A vulnerability was discovered in Gakido prior to version 0.1.1 that allowed HTTP header injection through CRLF (Carriage Return Line Feed) sequences in user-supplied header values and names. When making HTTP requests with user-controlled header values containing `\r\n` (CRLF), `\n` (LF), or `\x00` (null byte) characters, an attacker could inject arbitrary HTTP headers into the request. The fix in version 0.1.1 adds a `_sanitize_header()` function that strips `\r`, `\n`, and `\x00` characters from both header names and values before they are included in HTTP requests.

Affected products

• Happyhackingspace Gakido: before 0.1.1 (fixed in 0.1.1)

Published 2026-01-27. Last modified 2026-06-17.