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CVE-2025-54419— Node-SAML Contains SAML Signature Verification Vulnerability

Quick assessment

Affected
node-saml node-saml
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

node-saml是一个 SAML 库，不依赖于在 Node.js 中运行的任何框架。 node-saml 5.0.1版本存在安全漏洞，该漏洞源于未正确验证SAML断言，可能导致身份验证绕过。

CVSS 10.0 · Critical EPSS 0.36% · P28

Possible ATT&CK Techniques 1 AI

T1556.003 · Pluggable Authentication Modules
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I. Basic Information for CVE-2025-54419

Vulnerability Information
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Vulnerability Title
Node-SAML Contains SAML Signature Verification Vulnerability
Source: CVE Program / CVE List V5
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
认证机制不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
node-saml 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
node-saml是一个 SAML 库，不依赖于在 Node.js 中运行的任何框架。 node-saml 5.0.1版本存在安全漏洞，该漏洞源于未正确验证SAML断言，可能导致身份验证绕过。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

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Affected Products

Vendor Product Affected Versions CPE Subscribe
node-saml node-saml = 5.0.1 -

II. Public POCs for CVE-2025-54419

# POC Description Source Link Shenlong Link
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Qwen3.6-35B-A3B · 12184 chars
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III. Intelligence Information for CVE-2025-54419

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Patches & Fixes for CVE-2025-54419 (1)

IV. Related Vulnerabilities

Same product: node-saml
Same vendor: node-saml
Same weakness: CWE-287

V. Comments for CVE-2025-54419

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