CVE-2026-89043

passport-saml-encrypted through 0.1.13 contains an XML signature wrapping vulnerability where signature verification and assertion extraction use independent XPath lookups with no cross-validation. Attackers holding any validly signed SAML message can prepend a forged unsigned assertion that gets accepted as the verified identity while the genuine signature validates against the original assertion.

CVSS v3 7.4 HIGH

7.4^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.2 / Impact : 5.2

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/krakenjs/passport-saml-encrypted
https://github.com/krakenjs/passport-saml-encrypted/blob/v0.1.13/lib/saml.js#L256
https://github.com/krakenjs/passport-saml-encrypted/blob/v0.1.13/lib/saml.js#L328
https://github.com/krakenjs/passport-saml-encrypted/issues/30
https://www.vulncheck.com/advisories/passport-saml-encrypted-through-0.1.13-xml-signature-wrapping-via-assertion-prepending
https://github.com/krakenjs/passport-saml-encrypted/issues/30

Configurations

No configuration.

History

No history.

Information

Published : 2026-09-10 18:18

Updated : 2026-09-10 19:58

NVD link : CVE-2026-89043

Mitre link : CVE-2026-89043

CVE.ORG link : CVE-2026-89043

JSON object : View

Products Affected

No product.

CWE

CWE-347

Improper Verification of Cryptographic Signature

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