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CVE-2025-54369— Node-SAML SAML Authentication Bypass

Quick assessment

Affected
node-saml node-saml
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
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及之前版本存在数据伪造问题漏洞，该漏洞源于未验证断言文档，可能导致修改SAML断言中的认证细节。

AI Predicted 7.5 Difficulty: Easy EPSS 0.55% · P44

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
node-saml node-saml < 5.1.0 affected
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I. Basic Information for CVE-2025-54369

Vulnerability Information
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Vulnerability Title
Node-SAML SAML Authentication Bypass
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
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
Source: CVE Program / CVE List V5
Vulnerability Type
替代XSS语法转义处理不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
node-saml 数据伪造问题漏洞
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及之前版本存在数据伪造问题漏洞，该漏洞源于未验证断言文档，可能导致修改SAML断言中的认证细节。
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)

Affected Products

Vendor Product Affected Versions CPE Subscribe
node-saml node-saml < 5.1.0 -

II. Public POCs for CVE-2025-54369

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III. Intelligence Information for CVE-2025-54369

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Patches & Fixes for CVE-2025-54369 (1)

Vendor Advisories for CVE-2025-54369 (1)

IV. Related Vulnerabilities

Same product: node-saml
Same vendor: node-saml
Same weakness: CWE-87

V. Comments for CVE-2025-54369

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