Individual skill
exploiting-saml-authentication-flaws
Identifying and exploiting SAML SSO weaknesses including XML Signature Wrapping (XSW1-8), comment injection in NameID, missing/stripped signatures, recipient and audience confusion, assertion replay, key confusion, and XXE in SAML messages to forge authentication and impersonate users.
internal/tools/skills/data/web-application-security/exploiting-saml-authentication-flaws/SKILL.md
Source commit d42f381ad34843e71a42658e5c57290c713e85af
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- Last checked
- Nov 9, 2026
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- 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
- penetration-testing Declared skill tag
- saml Declared skill tag
- sso Declared skill tag
- xml-signature-wrapping Declared skill tag
- xsw Declared skill tag
- authentication-bypass Declared skill tag
- web-security Declared skill tag
- security Derived category
- testing Derived category
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# Exploiting SAML Authentication Flaws
## When to Use
- During authorized penetration tests of applications that use SAML 2.0 for SSO (enterprise apps, IdP-integrated portals)
- When the target is a Service Provider (SP) accepting assertions from an Identity Provider (IdP)
- For validating that signatures are verified correctly, that the signed element is the one consumed, and that recipient/audience/conditions are enforced
- When testing whether an attacker who controls one account (or none) can forge or tamper assertions to impersonate other users or admins
- During bug bounty programs targeting SSO/authentication bypass
## Prerequisites
- **Authorization**: Written penetration testing agreement covering authentication bypass and IdP/SP testing
- **Burp Suite Professional + SAML Raider**: The primary tool for editing, re-signing, and wrapping SAML messages