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.

Metrics

Attack Vector Network

Attack Complexity Low

Privileges Required None

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact High

Vulnerable System Integrity Impact High

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.0006.

Exploitation none

Automatable yes

Technical Impact partial

Affected Vendors & Products

Vendors Products
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No data.

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Advisories
Source ID Title
EUVD EUVD EUVD-2025-22555 Node-SAML SAML Authentication Bypass
Github GHSA Github GHSA GHSA-m837-g268-mmv7 Node-SAML SAML Authentication Bypass
Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://github.com/node-saml/node-saml/commit/31ead9411ebc3e2385086fa9149b6c17732bca10 cve-icon cve-icon
https://github.com/node-saml/node-saml/releases/tag/v5.1.0 cve-icon cve-icon
https://github.com/node-saml/node-saml/security/advisories/GHSA-m837-g268-mmv7 cve-icon cve-icon
History

Mon, 15 Dec 2025 15:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Sun, 14 Dec 2025 21:30:00 +0000

Type Values Removed Values Added
First Time appeared Node-saml
Node-saml node-saml
Vendors & Products Node-saml
Node-saml node-saml

Fri, 12 Dec 2025 23:15:00 +0000

Type Values Removed Values Added
Description Reason: This candidate was issued in error. 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.
Title Node-SAML SAML Authentication Bypass
Weaknesses CWE-347
CWE-87
References
Metrics cvssV4_0

{'score': 9.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N'}

Thu, 24 Jul 2025 22:45:00 +0000

Type Values Removed Values Added
Description Reason: This candidate was issued in error.

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2025-12-15T14:56:46.817Z

Reserved: 2025-07-21T16:12:20.732Z

Link: CVE-2025-54369

cve-icon Vulnrichment

Updated: 2025-12-15T14:56:08.789Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2025-07-24T23:15:26.790

Modified: 2025-12-15T18:22:40.637

Link: CVE-2025-54369

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2025-12-14T21:15:17Z

Weaknesses