{
   "document": {
      "aggregate_severity": {
         "text": "critical"
      },
      "category": "csaf_security_advisory",
      "csaf_version": "2.0",
      "distribution": {
         "tlp": {
            "label": "WHITE",
            "url": "https://www.first.org/tlp/"
         }
      },
      "lang": "en",
      "notes": [
         {
            "category": "description",
            "text": "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.",
            "title": "Vulnerability Description"
         }
      ],
      "publisher": {
         "category": "other",
         "contact_details": "gdt@cpan.org",
         "name": "giterlizzi",
         "namespace": "https://github.com/giterlizzi/"
      },
      "references": [
         {
            "category": "self",
            "summary": "CPANSA-MojoX-Authentication-2026-86304 JSON",
            "url": "https://raw.githubusercontent.com/giterlizzi/perl-CPANSA-CSAF/develop/csaf/white/2026/cpansa-mojox-authentication-2026-86304.json"
         },
         {
            "category": "external",
            "summary": "https://metacpan.org/release/POLETTIX/MojoX-Authentication-0.004/source/lib/MojoX/Authentication/Model/SAML2.pm#L188",
            "url": "https://metacpan.org/release/POLETTIX/MojoX-Authentication-0.004/source/lib/MojoX/Authentication/Model/SAML2.pm#L188"
         },
         {
            "category": "external",
            "summary": "https://metacpan.org/release/POLETTIX/MojoX-Authentication-0.006/source/Changes",
            "url": "https://metacpan.org/release/POLETTIX/MojoX-Authentication-0.006/source/Changes"
         },
         {
            "category": "external",
            "summary": "https://www.cve.org/CVERecord?id=CVE-2026-18089",
            "url": "https://www.cve.org/CVERecord?id=CVE-2026-18089"
         },
         {
            "category": "external",
            "summary": "CVE-2026-86304 (NVD)",
            "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-86304"
         }
      ],
      "title": "MojoX-Authentication vulnerability",
      "tracking": {
         "current_release_date": "2026-09-06T00:00:00",
         "generator": {
            "engine": {
               "name": "CSAF Perl Toolkit",
               "version": "0.26"
            }
         },
         "id": "CPANSA-MojoX-Authentication-2026-86304",
         "initial_release_date": "2026-09-06T00:00:00",
         "revision_history": [
            {
               "date": "2026-09-06T00:00:00",
               "number": "1",
               "summary": "First release"
            }
         ],
         "status": "final",
         "version": "1"
      }
   },
   "product_tree": {
      "branches": [
         {
            "branches": [
               {
                  "category": "product_version_range",
                  "name": "vers:cpan/<0.006",
                  "product": {
                     "name": "MojoX-Authentication less than 0.006",
                     "product_id": "CSAFPID-0001",
                     "product_identification_helper": {
                        "purl": "pkg:cpan/MojoX-Authentication"
                     }
                  }
               },
               {
                  "category": "product_version_range",
                  "name": "vers:cpan/>=0.006",
                  "product": {
                     "name": "MojoX-Authentication greater than or equal 0.006",
                     "product_id": "CSAFPID-0002",
                     "product_identification_helper": {
                        "purl": "pkg:cpan/MojoX-Authentication"
                     }
                  }
               }
            ],
            "category": "product_name",
            "name": "MojoX-Authentication"
         }
      ]
   },
   "vulnerabilities": [
      {
         "cve": "CVE-2026-86304",
         "cwe": {
            "id": "CWE-347",
            "name": "Improper Verification of Cryptographic Signature"
         },
         "notes": [
            {
               "category": "description",
               "text": "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.",
               "title": "Vulnerability Description"
            }
         ],
         "product_status": {
            "fixed": [
               "CSAFPID-0002"
            ],
            "known_affected": [
               "CSAFPID-0001"
            ]
         },
         "scores": [
            {
               "cvss_v3": {
                  "baseScore": 9.8,
                  "baseSeverity": "CRITICAL",
                  "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                  "version": "3.1"
               },
               "products": [
                  "CSAFPID-0001"
               ]
            }
         ]
      }
   ]
}