Individual skill
exploiting-type-juggling-vulnerabilities
Exploit PHP type juggling vulnerabilities caused by loose comparison operators to bypass authentication, circumvent hash verification, and manipulate application logic through type coercion attacks.
internal/tools/skills/data/web-application-security/exploiting-type-juggling-vulnerabilities/SKILL.md
Source commit d42f381ad34843e71a42658e5c57290c713e85af
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- Yes
- Scanner rules are current
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- Repository scan complete
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- Skill scan complete
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- Observed behavior
- Network or broad shell
- Last checked
- Nov 9, 2026
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- Repository stars (not skill ratings)
- 1,325
- Repository last updated
- Nov 9, 2026
- License
- Apache-2.0
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- cybersecurity Repository topic
- security Repository topic
- bug-bounty Repository topic
- automation Repository topic
- autonomous-pentesting Repository topic
- ai-agent Repository topic
- ai-security Repository topic
- ethical-hacking Repository topic
- golang Repository topic
- penetration-testing Repository topic
- type-juggling Declared skill tag
- php-security Declared skill tag
- loose-comparison Declared skill tag
- authentication-bypass Declared skill tag
- magic-hash Declared skill tag
- type-coercion Declared skill tag
- web-security Declared skill tag
- security Derived category
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# Exploiting Type Juggling Vulnerabilities
## When to Use
- When testing PHP web applications for authentication bypass vulnerabilities
- During assessment of password comparison and hash verification logic
- When testing applications using loose comparison (== instead of ===)
- During code review of PHP applications handling JSON or deserialized input
- When evaluating input validation that relies on type-dependent comparison
### How to CONFIRM a Hit (avoid false negatives)
- The positive signal is an **auth/compare actually bypassing**: the typed payload yields an authenticated session, a privileged response, or a "match" that the correct-but-wrong value does not. A 200 alone is not proof — diff against a known-bad baseline and require a real state change (session cookie, redirect to dashboard, role granted).
[Credential-related source omitted]
- For magic-hash collisions, confirm the stored hash is actually compared with `==`: a `0e[digits]`-only payload matches only if BOTH sides normalize to scientific-notation zero; test a known pair and a control that should fail.
- Do NOT conclude negative until you have tried ALL of these payloads/forms against EACH parameter: