Cookie Security Checker
Review cookie flags including Secure, HttpOnly, and SameSite to improve session hardening.
Best for teams reviewing sign-in flows, session handling, embedded experiences, checkout state, or recent changes to auth and application middleware.
What This Tool Checks
- Cookie inventory evidence
- Secure/HttpOnly/SameSite gaps
- Session hardening playbook
Why It Matters
Session and authentication weaknesses often show up in cookie flags long before they appear in breach reports. Missing Secure, HttpOnly, or SameSite protections can quietly weaken otherwise solid applications.
Best For
Best for teams reviewing sign-in flows, session handling, embedded experiences, checkout state, or recent changes to auth and application middleware.
What To Do Next
Use the findings to prioritize session-cookie fixes first, then verify whether your cross-site flows, logout behavior, and browser compatibility still work as intended.
Related Resources
What does the Cookie Security Checker look for?
Cookie Security Checker focuses on cookie inventory evidence, secure/httponly/samesite gaps, session hardening playbook. It is designed to help teams identify this category of weakness quickly and then move into broader workflows if deeper follow-up is needed.
What is the difference between Quick and Comprehensive mode?
Quick mode stays public for focused diagnostics. Comprehensive mode is intended for authenticated workflows where users need saved history, richer follow-up, and broader account-linked execution.
When should I use the full Vulnify platform instead?
Use the full platform when you need more than one focused diagnostic, want to keep reports and history, or need scheduled scans, exports, and broader vulnerability coverage beyond cookie security checker.