CVE-2026-18089 Net::SAML2 versions before 0.86 for Perl allow SAML authentication bypass by verifying responses against the response-embedded certificate in verify_xml when no trust anchor is configured

[
  {
    "collectionURL": "https://cpan.org/modules",
    "defaultStatus": "unaffected",
    "packageName": "Net-SAML2",
    "product": "Net::SAML2",
    "programFiles": [
      "lib/Net/SAML2/Role/VerifyXML.pm",
      "lib/Net/SAML2/Binding/POST.pm",
      "lib/Net/SAML2/Protocol/Assertion.pm"
    ],
    "programRoutines": [
      {
        "name": "Net::SAML2::Role::VerifyXML::verify_xml"
      },
      {
        "name": "Net::SAML2::Binding::POST::handle_response"
      },
      {
        "name": "Net::SAML2::Protocol::Assertion::_verify_encrypted_assertion"
      }
    ],
    "repo": "https://github.com/perl-net-saml2/perl-Net-SAML2",
    "vendor": "TIMLEGGE",
    "versions": [
      {
        "lessThan": "0.86",
        "status": "affected",
        "version": "0",
        "versionType": "custom"
      }
    ]
  }
]