OWASPASVS 5.0 requirement

ASVS-V3.3.3 Cookies have the '__host-' prefix for the cookie name unless they are explicitly designed to be shared with other hosts.

L2 Published 2025 Official page ↗
Standard
OWASP ASVS 5.0
Chapter
V3 Web Frontend Security
Section
V3.3 Cookie Setup
Level
L2 (requirement applies from this verification level up)

Requirement

Verify that cookies have the '__Host-' prefix for the cookie name unless they are explicitly designed to be shared with other hosts.