XML External Entity (XXE) Injection Affecting express-saml2 package, versions *



    Attack Complexity High
    Confidentiality High
    Integrity High
    Availability High

    Threat Intelligence

    EPSS 0.09% (39th percentile)
Expand this section
7.5 high

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  • Snyk ID npm:express-saml2:20171002
  • published 22 Jan 2018
  • disclosed 2 Oct 2017
  • credit Unknown

How to fix?

There is no fix version for express-saml2.


express-saml2 is a High-level API for Single Sign On (SAML 2.0).

Affected versions of this package are vulnerable to XML Injection attack.

An XML Signature Wrapping vulnerability exists in Samlify 2.2.0 and earlier, and in predecessor Express-saml2 which could allow attackers to impersonate arbitrary users.