Vulnerability Guides
CORS Misconfiguration: How to Prevent It
A too-generous CORS policy can let a malicious site read authenticated responses from your API. Reflecting the Origin with credentials is the classic mistake.
Jul 4, 20265 min read
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SMTP Injection (Email Header Injection): Prevention Guide
A contact form that builds emails from user input can be turned into a spam relay or a phishing generator through SMTP header injection. Here's how the attack works and how to neutralize it.
Jul 3, 20265 min read
Vulnerability Guides
JWT Security Vulnerabilities and How to Avoid Them
JSON Web Tokens are only as safe as how you verify them. The alg:none trick, RS256-to-HS256 confusion, and weak secrets have all led to full auth bypass.
Jul 3, 20265 min read
Vulnerability Guides
YAML Injection: How It Happens and How to Prevent It
YAML looks like a harmless config format, but the wrong parser call turns a config file into a code-execution engine. Here's how YAML deserialization attacks work and how to parse safely.
Jul 2, 20265 min read
Vulnerability Guides
Mass Assignment Vulnerability: How to Prevent It
Mass assignment lets attackers set fields you never meant to expose — like isAdmin or accountBalance — by adding them to a request body. Here is the fix.
Jul 2, 20265 min read
Vulnerability Guides
What Is SSTI (Server-Side Template Injection)?
SSTI happens when user input is compiled as template code instead of rendered as data, often leading straight to remote code execution. Here is how to prevent it.
Jul 2, 20265 min read
Vulnerability Guides
What is Insecure Deserialization? A Developer's Guide
Insecure deserialization turns a trusted data-loading routine into a remote code execution primitive. Learn how gadget chains work and how to deserialize untrusted data safely.
Jul 2, 20265 min read
Vulnerability Guides
Cross-Site Scripting (XSS): A Prevention Guide
XSS lets an attacker run their JavaScript in your users' browsers — stealing sessions, rewriting pages, and pivoting to account takeover. This guide covers the three XSS types and the defenses that actually hold.
Jul 1, 20265 min read
Vulnerability Guides
What Is XXE (XML External Entity Injection)?
XXE abuses an XML parser's ability to load external entities to read local files, reach internal services, or knock a server offline. Here is how to stop it.
Jul 1, 20265 min read
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