Vulnerability Description
A SAML library not dependent on any frameworks that runs in Node. In version 5.0.1, Node-SAML loads the assertion from the (unsigned) original response document. This is different than the parts that are verified when checking signature. This allows an attacker to modify authentication details within a valid SAML assertion. For example, in one attack it is possible to remove any character from the SAML assertion username. To conduct the attack an attacker would need a validly signed document from the identity provider (IdP). This is fixed in version 5.1.0.
CVSS Score
CRITICAL
Related Weaknesses (CWE)
References
- https://github.com/node-saml/node-saml/commit/31ead9411ebc3e2385086fa9149b6c1773
- https://github.com/node-saml/node-saml/releases/tag/v5.1.0
- https://github.com/node-saml/node-saml/security/advisories/GHSA-4mxg-3p6v-xgq3
FAQ
What is CVE-2025-54419?
CVE-2025-54419 is a vulnerability with a CVSS score of 10.0 (CRITICAL). A SAML library not dependent on any frameworks that runs in Node. In version 5.0.1, Node-SAML loads the assertion from the (unsigned) original response document. This is different than the parts that ...
How severe is CVE-2025-54419?
CVE-2025-54419 has been rated CRITICAL with a CVSS base score of 10.0/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2025-54419?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.