CVE-2025-54369

UNKNOWN 0.0

Node-SAML SAML Authentication Bypass

CVSS Score

0.0

EPSS Score

0.0%

EPSS Percentile

15th

Node-SAML is a SAML library not dependent on any frameworks that runs in Node. In versions 5.0.1 and below, 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. This issue is fixed in version 5.1.0.

CWE	CWE-87 CWE-347
Vendor	node-saml
Product	node-saml
Published	Dec 12, 2025
Last Updated	May 7, 2026

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Affected Versions

node-saml / node-saml

< 5.1.0

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/node-saml/node-saml/security/advisories/GHSA-m837-g268-mmv7 github.com: https://github.com/node-saml/node-saml/commit/31ead9411ebc3e2385086fa9149b6c17732bca10 github.com: https://github.com/node-saml/node-saml/releases/tag/v5.1.0