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CVE-2026-89043

passport-saml-encrypted through 0.1.13 XML Signature Wrapping via Assertion Prepending

CVSS 4.0 9.1 CRITICALCVSS 3.1 7.4 HIGHCheck source for fixed versionsKEV status unknown

Original advisory

cve-program · CVE-2026-89043

Published

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.

Read the publisher's advisory

Affected versions, risk and source history

cve-program · CVE-2026-89043

Published

passport-saml-encrypted

https://www.npmjs.com/package/passport-saml-encrypted

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "krakenjs",
                    "product": "passport-saml-encrypted",
                    "defaultStatus": "unaffected",
                    "packageURL": "pkg:npm/passport-saml-encrypted",
                    "versions": [
                        {
                            "version": "0",
                            "status": "affected",
                            "versionType": "semver",
                            "lessThanOrEqual": "0.1.13"
                        }
                    ],
                    "repo": "https://github.com/krakenjs/passport-saml-encrypted",
                    "collectionURL": "https://www.npmjs.com/package/passport-saml-encrypted"
                }

Original source record · Cite this exact observation · Complete original publisher JSON