{"id":"CVE-2026-89043","title":"passport-saml-encrypted through 0.1.13 XML Signature Wrapping via Assertion Prepending","summary":"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 SA…","severity":"high","cvss":7.4,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N","cvssSource":"cna","cwe":["CWE-347"],"vendor":"krakenjs","product":"passport-saml-encrypted","affected":["passport-saml-encrypted <= 0.1.13"],"ssvc":{"exploitation":"poc","automatable":"no","technicalImpact":"total","timestamp":"2026-09-10T17:53:33.236465Z"},"exploitAvailable":true,"published":"2026-09-10","updated":"2026-09-10","sourceUpdated":"2026-09-10T17:53:56.984Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-89043","references":[{"url":"https://github.com/krakenjs/passport-saml-encrypted/issues/30","label":"Reporter advisory: XML signature wrapping"},{"url":"https://github.com/krakenjs/passport-saml-encrypted/blob/v0.1.13/lib/saml.js#L256","label":"Signature located by an unconstrained XPath at v0.1.13"},{"url":"https://github.com/krakenjs/passport-saml-encrypted/blob/v0.1.13/lib/saml.js#L328","label":"Assertion selected by a separate first-match XPath at v0.1.13"},{"url":"https://github.com/krakenjs/passport-saml-encrypted","label":"krakenjs/passport-saml-encrypted"},{"url":"https://www.vulncheck.com/advisories/passport-saml-encrypted-through-0.1.13-xml-signature-wrapping-via-assertion-prepending","label":"VulnCheck Advisory: passport-saml-encrypted through 0.1.13 XML Signature Wrapping via Assertion Prepending"}],"tags":["cve.org","exploit-available"],"epss":0.00284,"epssPercentile":0.21171,"ingestedAt":"2026-09-11T14:42:19.864Z","slug":"CVE-2026-89043","body":"## Overview\n\npassport-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.\n\n## Affected\n\n- `passport-saml-encrypted <= 0.1.13`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"midnight","depthScore":53,"depthScoreParts":{"impact":40.7,"likelihood":0.1,"exploitation":12,"ransomware":0},"changes":[]}