Bug Patterns
Every test run checks your app against 2,967 real-world bug patterns — sourced from OWASP, WCAG, Lighthouse, production incident reports, and framework-specific issues.
Where the patterns come from
Six battle-tested sources, curated by security researchers and senior engineers.
OWASP Top 10
Injection, XSS, CSRF, auth bypass, and the full spectrum of web security vulnerabilities.
- SQL injection via search params
- Stored XSS in rich text editors
- CSRF on state-changing endpoints
WCAG 2.2
Contrast ratios, keyboard navigation, ARIA attributes, screen reader compatibility, and focus management.
- Missing alt text on decorative images
- Focus trap in modal dialogs
- Insufficient color contrast (< 4.5:1)
Lighthouse
Performance bottlenecks, best practices violations, SEO issues, and PWA readiness checks.
- Render-blocking resources in head
- Missing meta descriptions
- Images served without next-gen formats
Real Production Bugs
Sourced from public bug bounty reports, GitHub issues, and the CVE database.
- Race condition on double-click submit
- Data loss on browser back navigation
- Session fixation after password reset
Framework-Specific
Next.js hydration mismatches, React key warnings, Vue reactivity bugs, Swift memory leaks, and more.
- useEffect cleanup missing on unmount
- Hydration mismatch from Date.now()
- Force unwrap on optional in Swift
Edge Cases
Unicode handling, RTL text, timezone issues, large file uploads, empty states, and network failures.
- Emoji in username breaks layout
- Timezone offset on date picker
- Empty state shows raw error object
Pattern categories
Organized into six categories covering every layer of your application.
UI & Interaction
412patterns- Buttons that don't respond to clicks
- Forms that lose data on navigation
- Modals that can't be closed with Escape
- Infinite scroll that breaks pagination
- Tooltips that overflow viewport
API & Data
389patterns- Endpoints returning 200 on error
- Missing pagination on large datasets
- Race conditions on concurrent requests
- Stale data after mutations
- Missing error handling for network failures
Security
312patterns- XSS in every input type
- CSRF token validation
- Auth bypass via URL manipulation
- Exposed environment variables
- Insecure cookie settings
Performance
234patterns- Images without lazy loading
- Blocking JavaScript in head
- Unused CSS/JS bundles
- Memory leaks in SPAs
- Layout shift (CLS issues)
Accessibility
487patterns- Missing alt text
- Low contrast ratios
- Keyboard traps
- Missing form labels
- Wrong heading hierarchy
Framework-Specific
643patternsAnti-false-positive system
More patterns doesn't mean more noise. Every finding earns its place in the report.
Confidence thresholds
Each pattern has a confidence threshold (default: 80%). Only high-confidence findings are reported.
Triple verification
Patterns are tested with 3 different input variations before reporting a finding.
Framework context
Framework-specific context helps distinguish intended behavior from actual bugs.
Adaptive learning
Mark findings as "not a bug" and VibeQA learns your preferences over time.
Continuously updated
We add 50-100 new patterns every month, sourced from new CVEs, framework updates, and community reports.
Test against 2,967 patterns
Drop your project into VibeQA and get a full report in minutes. No config required.