CVE-2025-54419 | THREATINT

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.

Reserved 2025-07-21 | Published 2025-07-28 | Updated 2025-07-28 | Assigner GitHub_M

CRITICAL: 10.0CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N

Problem types

CWE-287: Improper Authentication

CWE-347: Improper Verification of Cryptographic Signature

Product status

= 5.0.1

affected

References

github.com/...e-saml/security/advisories/GHSA-4mxg-3p6v-xgq3

github.com/...ommit/31ead9411ebc3e2385086fa9149b6c17732bca10

github.com/node-saml/node-saml/releases/tag/v5.1.0

cve.org (CVE-2025-54419)

nvd.nist.gov (CVE-2025-54419)

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