{"id":"CVE-2025-46573","aliases":["EUVD-2025-13640","GHSA-8gqj-226h-gm8r"],"status":"published","title":"passport-wsfed-saml2 Has SAML Authentication Bypass via Attribute Smuggling","description":"passport-wsfed-saml2 provides passport strategy for both WS-fed and SAML2 protocol. A vulnerability present starting in version 3.0.5 up to and including version 4.6.3 allows an attacker to impersonate any user during SAML authentication by tampering with a valid SAML response. This can be done by adding attributes to the response. Users are affected specifically when the service provider is using `passport-wsfed-saml2` and a valid SAML Response signed by the Identity Provider can be obtained. Version 4.6.4 contains a fix for the vulnerability.","severity":{"version":"4.0","score":8.6,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00381,"percentile":0.32372,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-287","CWE-290"],"published":"2025-05-06T20:22:00Z","modified":"2026-10-28T02:30:56Z","fixes":[{"ecosystem":"npm","package":"passport-wsfed-saml2","fixed_in":["4.6.4"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"npm","package":"passport-wsfed-saml2","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.0.5"},{"last_affected":"4.6.3"},{"fixed":"4.6.4"}]}]},{"source":"osv","ecosystem":"npm","package":"passport-wsfed-saml2","ranges":[{"type":"SEMVER","events":[{"introduced":"3.0.5"},{"fixed":"4.6.4"}]}]}],"products":[{"vendor":"auth0","product":"passport-wsfed-saml2"}],"references":[{"url":"https://github.com/auth0/passport-wsfed-saml2/security/advisories/GHSA-8gqj-226h-gm8r","tags":["x_refsource_CONFIRM","advisory","web"]},{"url":"https://github.com/auth0/passport-wsfed-saml2/commit/e5cf3cc2a53748207f7a81bfba9195c8efa94181","tags":["x_refsource_MISC","fix","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-46573","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-8gqj-226h-gm8r"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/46xxx/CVE-2025-46573.json","tags":["advisory"]},{"url":"https://github.com/auth0/passport-wsfed-saml2","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2025-46573","title":"passport-wsfed-saml2 Has SAML Authentication Bypass via Attribute Smuggling","description":"passport-wsfed-saml2 provides passport strategy for both WS-fed and SAML2 protocol. A vulnerability present starting in version 3.0.5 up to and including version 4.6.3 allows an attacker to impersonate any user during SAML authentication by tampering with a valid SAML response. This can be done by adding attributes to the response. Users are affected specifically when the service provider is using `passport-wsfed-saml2` and a valid SAML Response signed by the Identity Provider can be obtained. Version 4.6.4 contains a fix for the vulnerability.","status":"published","published":"2025-05-06T20:22:00.104Z","modified":"2025-05-07T15:34:04.601Z","cvss":[{"version":"4.0","score":8.6,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N","level":"high","assessor":"cna"}],"cwes":["CWE-287"],"updated_at":"2026-11-02T14:32:36.706507Z"}],"euvd":[{"id":"EUVD-2025-13640","description":"passport-wsfed-saml2 provides passport strategy for both WS-fed and SAML2 protocol. A vulnerability present starting in version 3.0.5 up to and including version 4.6.3 allows an attacker to impersonate any user during SAML authentication by tampering with a valid SAML response. This can be done by adding attributes to the response. Users are affected specifically when the service provider is using `passport-wsfed-saml2` and a valid SAML Response signed by the Identity Provider can be obtained. Version 4.6.4 contains a fix for the vulnerability.","status":"published","published":"2025-05-06T20:22:00Z","modified":"2025-05-07T15:34:04Z","cvss":[{"version":"4.0","score":8.6,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N","level":"high"}],"updated_at":"2026-11-02T20:32:53.098709Z"}],"ghsa":[{"id":"GHSA-8gqj-226h-gm8r","title":"Passport-wsfed-saml2 allows SAML Authentication Bypass via Attribute Smuggling","description":"### Overview\nThis vulnerability allows an attacker to impersonate any user during SAML authentication by tampering with a valid SAML response. This can be done by adding attributes to the response.\n\n### Am I Affected?\nYou are affected by this SAML Attribute Smuggling vulnerability if you are using `passport-wsfed-saml2` version 4.6.3 or below, specifically under the following conditions:\n1. The service provider is using `passport-wsfed-saml2`, \n2. A valid SAML Response signed by the Identity Provider can be obtained\n\n### Fix\nUpgrade to v4.6.4 or greater.","status":"published","published":"2025-05-06T21:18:49Z","modified":"2025-05-07T15:34:31Z","cvss":[{"version":"4.0","score":8.6,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N","level":"high"}],"cwes":["CWE-287","CWE-290"],"updated_at":"2026-11-02T14:38:43.172412Z"}],"nvd":[{"id":"CVE-2025-46573","description":"passport-wsfed-saml2 provides passport strategy for both WS-fed and SAML2 protocol. A vulnerability present starting in version 3.0.5 up to and including version 4.6.3 allows an attacker to impersonate any user during SAML authentication by tampering with a valid SAML response. This can be done by adding attributes to the response. Users are affected specifically when the service provider is using `passport-wsfed-saml2` and a valid SAML Response signed by the Identity Provider can be obtained. Version 4.6.4 contains a fix for the vulnerability.","status":"published","published":"2025-05-06T21:16:20.54Z","modified":"2026-06-17T09:26:38.853Z","cvss":[{"version":"4.0","score":8.6,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high","assessor":"secondary"}],"cwes":["CWE-287"],"updated_at":"2026-11-02T14:11:06.085152Z"}],"osv":[{"id":"CVE-2025-46573","title":"passport-wsfed-saml2 Has SAML Authentication Bypass via Attribute Smuggling","description":"passport-wsfed-saml2 provides passport strategy for both WS-fed and SAML2 protocol. A vulnerability present starting in version 3.0.5 up to and including version 4.6.3 allows an attacker to impersonate any user during SAML authentication by tampering with a valid SAML response. This can be done by adding attributes to the response. Users are affected specifically when the service provider is using `passport-wsfed-saml2` and a valid SAML Response signed by the Identity Provider can be obtained. Version 4.6.4 contains a fix for the vulnerability.","status":"published","published":"2025-05-06T20:22:00.104Z","modified":"2026-10-28T02:30:56.778182609Z","cvss":[{"version":"4.0","score":8.6,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N","level":"high"}],"cwes":["CWE-287"],"updated_at":"2026-11-02T15:44:49.707645Z"},{"id":"GHSA-8gqj-226h-gm8r","title":"Passport-wsfed-saml2 allows SAML Authentication Bypass via Attribute Smuggling","description":"### Overview\nThis vulnerability allows an attacker to impersonate any user during SAML authentication by tampering with a valid SAML response. This can be done by adding attributes to the response.\n\n### Am I Affected?\nYou are affected by this SAML Attribute Smuggling vulnerability if you are using `passport-wsfed-saml2` version 4.6.3 or below, specifically under the following conditions:\n1. The service provider is using `passport-wsfed-saml2`, \n2. A valid SAML Response signed by the Identity Provider can be obtained\n\n### Fix\nUpgrade to v4.6.4 or greater.","status":"published","published":"2025-05-06T21:18:49Z","modified":"2025-05-07T15:34:30Z","cvss":[{"version":"4.0","score":8.6,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N","level":"high"}],"cwes":["CWE-287","CWE-290"],"updated_at":"2026-11-02T15:46:42.437513Z"}]}}