Vulnerability Guides
Common security vulnerabilities explained
36 articlesAPI Authentication Bypass Explained
API authentication bypass lets attackers access protected endpoints without proper credentials. Learn about common bypass techniques and how to prevent them.
Broken Access Control Explained
Broken access control is the #1 web security risk. It happens when users can access resources or actions they should not be authorized for. Learn how to fix it.
Broken Authentication Explained: When Login Security Fails
Broken authentication lets attackers bypass login systems, take over accounts, or impersonate users. Learn the common auth failures in vibe-coded apps and how to fix them.
Clickjacking Explained
Clickjacking tricks users into clicking hidden elements on your site embedded in malicious pages. Learn how to prevent it with X-Frame-Options and CSP headers.
Command Injection Explained
Command injection lets attackers run arbitrary system commands through your application. Learn how it works and how to safely execute commands without risk.
CORS Misconfiguration Explained
CORS misconfiguration can expose your API to unauthorized cross-origin requests. Learn how CORS works, common mistakes, and how to configure it securely.
CSRF Explained: Cross-Site Request Forgery in Plain English
CSRF tricks users into performing unwanted actions on sites where they're logged in. Learn how CSRF attacks work and how to protect your app with tokens and SameSite cookies.
DNS Rebinding Explained
DNS rebinding lets attackers bypass same-origin policy by switching DNS resolution mid-session. Learn how it works and how to protect your local services.
Email Header Injection Explained
Email header injection lets attackers add CC/BCC recipients or modify email content through form inputs. Learn how to sanitize email inputs properly.
Exposed API Keys: What They Are and Why They're Dangerous
API keys in your frontend code can lead to stolen data and surprise bills. Learn what exposed API keys are, how to find them, and how to fix the problem.
Exposed API Keys Explained: The #1 Vibe Coding Vulnerability
API key exposure is the most common security issue in AI-generated code. Learn what exposed API keys are, why they're dangerous, and how to fix them fast.
GraphQL Vulnerabilities Explained
GraphQL APIs have unique security challenges including introspection leaks, deep queries, and batching attacks. Learn how to secure your GraphQL endpoint.
Hardcoded Credentials Explained
Hardcoded passwords and secrets in source code get pushed to repos and exposed. Learn how to find and remove hardcoded credentials from your codebase.
IDOR Explained: Insecure Direct Object Reference
IDOR lets attackers access other users' data by changing IDs in URLs or requests. Learn how this common vulnerability works and how to protect your vibe-coded app.
Insecure Cookies Explained
Missing cookie security flags can expose session tokens to theft via XSS or network attacks. Learn how to set HttpOnly, Secure, and SameSite flags properly.
Insecure Deserialization Explained
Insecure deserialization lets attackers execute code by manipulating serialized data. Learn how this vulnerability works and why it's rare in modern JavaScript apps.
Insecure File Permissions Explained
Improper file permissions can expose sensitive files to unauthorized users. Learn how to set proper permissions for config files, uploads, and secrets.
Insufficient Logging Explained
Without proper logging, you can't detect attacks or investigate breaches. Learn what to log, what not to log, and how to set up security monitoring.
JWT Vulnerabilities Explained
JWT implementation mistakes can let attackers forge tokens or bypass authentication. Learn about algorithm confusion, weak secrets, and proper JWT validation.
Mass Assignment Explained
Mass assignment lets attackers modify fields they should not have access to by adding extra properties to requests. Learn how to whitelist allowed fields.
Missing Rate Limiting Explained
Without rate limiting, attackers can brute force passwords, scrape data, or DoS your app. Learn how to implement rate limiting in your API and authentication.
Open Redirect Explained
Open redirects let attackers use your site to redirect users to malicious pages. Learn how open redirects work and how to safely handle redirects.
Path Traversal Explained
Path traversal lets attackers read files outside your intended directory using ../ sequences. Learn how to safely handle file paths in your application.
Prototype Pollution Explained
Prototype pollution lets attackers inject properties into JavaScript object prototypes, affecting all objects. Learn how it works and how to prevent it.
Race Conditions Explained
Race conditions let attackers exploit timing gaps between check and use. Learn how TOCTOU bugs work and how to prevent them with proper locking and atomicity.
ReDoS (Regex DoS) Explained
ReDoS attacks use malicious input to make regular expressions take exponential time. Learn how to identify and fix vulnerable regex patterns in your code.
Security Misconfiguration Explained
Security misconfiguration covers default passwords, verbose errors, missing security headers, and exposed admin panels. Learn the common misconfigs in vibe-coded apps.
Sensitive Data Exposure Explained
Sensitive data exposure happens when personal, financial, or confidential information isn't properly protected. Learn how data leaks happen and how to secure user data.
SQL Injection Explained: How Attackers Manipulate Your Database
SQL injection lets attackers read, modify, or delete your database through input fields. Learn how SQLi works and how to protect your vibe-coded app with parameterized queries.
SSRF (Server-Side Request Forgery) Explained
SSRF lets attackers make your server send requests to internal systems. Learn how SSRF works and how to protect server-side URL fetching in your app.
Subdomain Takeover Explained
Subdomain takeover happens when DNS points to an unclaimed external service. Attackers can claim that service and host content on your subdomain.
Timing Attacks Explained
Timing attacks measure how long operations take to extract secrets. Learn about timing-safe comparisons and how to protect sensitive operations.
Vulnerable Dependencies Explained
Third-party packages can contain security vulnerabilities that put your app at risk. Learn how to find and fix vulnerable dependencies in your vibe-coded projects.
WebSocket Security Explained
WebSockets bypass traditional HTTP security controls. Learn about WebSocket authentication, origin validation, and common security pitfalls to avoid.
Cross-Site Scripting (XSS) Explained in Plain English
XSS attacks let hackers inject malicious scripts into your web pages. Learn how XSS works, see real examples, and discover how to protect your vibe-coded app.
XXE (XML External Entity) Explained
XXE attacks exploit XML parsers to read files, make server requests, or crash applications. Learn how XXE works and why modern apps that don't use XML are usually safe.