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.

Metrics

Attack Vector Network

Attack Complexity Low

Privileges Required None

Attack Requirements Present

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

Attack Vector Network

Attack Complexity High

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploitation poc

Automatable no

Technical Impact total

Affected Vendors & Products

No data.

No data.

No data.

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

Thu, 10 Sep 2026 18:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Thu, 10 Sep 2026 17:45:00 +0000

Type Values Removed Values Added
Description 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.
Title passport-saml-encrypted through 0.1.13 XML Signature Wrapping via Assertion Prepending
Weaknesses CWE-347
References
Metrics cvssV3_1

{'score': 7.4, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N'}

cvssV4_0

{'score': 9.1, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N'}
cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published: 2026-09-10T17:39:33.458Z

Updated: 2026-09-10T17:53:56.984Z

Reserved: 2026-09-10T16:45:09.299Z

Link: CVE-2026-89043

cve-icon Vulnrichment

Updated: 2026-09-10T17:53:52.098Z

cve-icon NVD

Status : Deferred

Published: 2026-09-10T18:18:16.073

Modified: 2026-09-10T19:58:20.507

Link: CVE-2026-89043

cve-icon Redhat

No data.