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How the CVE Works:
Node-SAML processes unsigned SAML assertions from the original response document instead of verified content. An attacker can manipulate authentication details (e.g., truncating usernames) within a valid SAML assertion if they possess a signed document from the IdP. The flaw stems from improper validation of XML signatures, allowing tampered assertions to bypass authentication. The fix enforces strict verification by upgrading `xml-crypto` to v6.1.2 and ensuring only authenticated content is processed.
DailyCVE Form:
Platform: Node-SAML
Version: <6.1.2
Vulnerability: Auth Bypass
Severity: Critical
Date: Jul 24, 2025
Prediction: Patch by Aug 7, 2025
What Undercode Say:
Check installed version npm list node-saml Exploit PoC (simulated) curl -X POST --data @malicious_assertion.xml https://target/idp_callback Mitigation command npm update node-saml --save
How Exploit:
- Modify unsigned SAML assertions.
- Inject altered usernames/attributes.
- Bypass authentication checks.
Protection from this CVE:
- Upgrade to node-saml >=6.1.2.
- Enforce strict XML signature validation.
- Reject unsigned assertions.
Impact:
- Unauthorized access.
- Identity spoofing.
- Privilege escalation.
Sources:
Reported By: github.com
Extra Source Hub:
Undercode
