{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-86304", "assignerOrgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e", "state": "PUBLISHED", "assignerShortName": "CPANSec", "dateReserved": "2026-09-06T17:59:12.036Z", "datePublished": "2026-09-06T22:24:19.368Z", "dateUpdated": "2026-09-06T22:24:19.368Z"}, "containers": {"cna": {"affected": [{"collectionURL": "https://cpan.org/modules", "defaultStatus": "unaffected", "modules": ["MojoX::Authentication"], "packageName": "MojoX-Authentication", "packageURL": "pkg:cpan/MojoX-Authentication", "programFiles": ["lib/MojoX/Authentication/Model/SAML2.pm"], "programRoutines": [{"name": "MojoX::Authentication::Model::SAML2::parse_assertion"}], "versions": [{"lessThan": "0.006", "status": "affected", "version": "0", "versionType": "custom"}]}], "descriptions": [{"lang": "en", "value": "MojoX::Authentication versions before 0.006 for Perl allow SAML authentication bypass because parse_assertion builds Net::SAML2::Binding::POST without a trust anchor.\n\nparse_assertion in MojoX::Authentication::Model::SAML2 calls Net::SAML2::Binding::POST->new with no cacert, cert_text or anchors argument, then passes the returned XML to Net::SAML2::Protocol::Assertion->new_from_xml with the IdP signing certificate as cacert. In Net::SAML2 before 0.86 that certificate guards only encrypted assertions, so the signature on an unencrypted assertion is checked against the certificate the response itself carries.\n\nAn attacker starts a SAML login, then posts a response signed with a certificate of their own. The audience, InResponseTo and timestamp checks that follow are all satisfiable by the attacker, so the response authenticates any NameID it carries."}], "impacts": [{"capecId": "CAPEC-115", "descriptions": [{"lang": "en", "value": "CAPEC-115 Authentication Bypass"}]}], "problemTypes": [{"descriptions": [{"cweId": "CWE-347", "description": "CWE-347 Improper Verification of Cryptographic Signature", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"orgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e", "shortName": "CPANSec", "dateUpdated": "2026-09-06T22:24:19.368Z"}, "references": [{"tags": ["release-notes"], "url": "https://metacpan.org/release/POLETTIX/MojoX-Authentication-0.006/source/Changes"}, {"url": "https://metacpan.org/release/POLETTIX/MojoX-Authentication-0.004/source/lib/MojoX/Authentication/Model/SAML2.pm#L188"}, {"tags": ["related"], "url": "https://www.cve.org/CVERecord?id=CVE-2026-18089"}], "solutions": [{"lang": "en", "value": "Upgrade to MojoX-Authentication 0.006 or later."}], "source": {"discovery": "UNKNOWN"}, "timeline": [{"lang": "en", "time": "2026-07-31T00:00:00.000Z", "value": "Version 0.006 released with fix."}], "title": "MojoX::Authentication versions before 0.006 for Perl allow SAML authentication bypass because parse_assertion builds Net::SAML2::Binding::POST without a trust anchor", "workarounds": [{"lang": "en", "value": "For deployments that cannot upgrade, install Net::SAML2 0.86 or later. SAML login then fails rather than accepting a forged assertion."}], "x_generator": {"engine": "cpansec-cna-tool 0.1"}}}}

{}

{"affected": [{"affectedData": [{"collectionURL": "https://cpan.org/modules", "defaultStatus": "unaffected", "modules": ["MojoX::Authentication"], "packageName": "MojoX-Authentication", "packageURL": "pkg:cpan/MojoX-Authentication", "programFiles": ["lib/MojoX/Authentication/Model/SAML2.pm"], "programRoutines": [{"name": "MojoX::Authentication::Model::SAML2::parse_assertion"}], "versions": [{"lessThan": "0.006", "status": "affected", "version": "0", "versionType": "custom"}]}], "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "MojoX::Authentication versions before 0.006 for Perl allow SAML authentication bypass because parse_assertion builds Net::SAML2::Binding::POST without a trust anchor.\n\nparse_assertion in MojoX::Authentication::Model::SAML2 calls Net::SAML2::Binding::POST->new with no cacert, cert_text or anchors argument, then passes the returned XML to Net::SAML2::Protocol::Assertion->new_from_xml with the IdP signing certificate as cacert. In Net::SAML2 before 0.86 that certificate guards only encrypted assertions, so the signature on an unencrypted assertion is checked against the certificate the response itself carries.\n\nAn attacker starts a SAML login, then posts a response signed with a certificate of their own. The audience, InResponseTo and timestamp checks that follow are all satisfiable by the attacker, so the response authenticates any NameID it carries."}], "id": "CVE-2026-86304", "lastModified": "2026-09-06T23:17:39.483", "metrics": {}, "published": "2026-09-06T23:17:39.483", "references": [{"source": "9b29abf9-4ab0-4765-b253-1875cd9b441e", "url": "https://metacpan.org/release/POLETTIX/MojoX-Authentication-0.004/source/lib/MojoX/Authentication/Model/SAML2.pm#L188"}, {"source": "9b29abf9-4ab0-4765-b253-1875cd9b441e", "url": "https://metacpan.org/release/POLETTIX/MojoX-Authentication-0.006/source/Changes"}, {"source": "9b29abf9-4ab0-4765-b253-1875cd9b441e", "url": "https://www.cve.org/CVERecord?id=CVE-2026-18089"}], "sourceIdentifier": "9b29abf9-4ab0-4765-b253-1875cd9b441e", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-347"}], "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e", "type": "Secondary"}]}

{}

{"created": "2026-09-06T23:30:05.062531+00:00", "updated": "2026-09-06T23:30:05.062545+00:00", "vendors": []}