{
   "document": {
      "category": "csaf_security_advisory",
      "csaf_version": "2.0",
      "distribution": {
         "tlp": {
            "label": "WHITE",
            "url": "https://www.first.org/tlp/"
         }
      },
      "lang": "en",
      "notes": [
         {
            "category": "description",
            "text": "Google::Auth versions before 0.06 for Perl run a command named in an external_account credentials JSON via an ungated system call.\n\nThe Pluggable subclass reads credential_source.executable.command from the credentials JSON and runs it as `system($command)`, a single argument call that passes the whole string to /bin/sh -c. The executable's environment_variables map from the same JSON is copied into %ENV first. No opt-in gate guards the call. make_creds selects the Pluggable subclass whenever credential_source.executable is present, so the path is reached from the standard Application Default Credentials flow, including a \"type\": \"external_account\" configuration read from the file named by GOOGLE_APPLICATION_CREDENTIALS. Configurations without credential_source.executable do not select this subclass and do not reach the call.\n\nAny caller that builds credentials from a configuration it does not fully control runs the embedded command with the privileges of the application process.",
            "title": "Vulnerability Description"
         }
      ],
      "publisher": {
         "category": "other",
         "contact_details": "gdt@cpan.org",
         "name": "giterlizzi",
         "namespace": "https://github.com/giterlizzi/"
      },
      "references": [
         {
            "category": "self",
            "summary": "CPANSA-Google-Auth-2026-66902 JSON",
            "url": "https://raw.githubusercontent.com/giterlizzi/perl-CPANSA-CSAF/develop/csaf/white/2026/cpansa-google-auth-2026-66902.json"
         },
         {
            "category": "external",
            "summary": "https://github.com/GoogleCloudPlatform/google-auth-library-perl/commit/c95c77e70bec94f17e239d88050f843ea1cade95.patch",
            "url": "https://github.com/GoogleCloudPlatform/google-auth-library-perl/commit/c95c77e70bec94f17e239d88050f843ea1cade95.patch"
         },
         {
            "category": "external",
            "summary": "https://metacpan.org/release/CJCOLLIER/Google-Auth-0.06/diff/CJCOLLIER/Google-Auth-0.05",
            "url": "https://metacpan.org/release/CJCOLLIER/Google-Auth-0.06/diff/CJCOLLIER/Google-Auth-0.05"
         },
         {
            "category": "external",
            "summary": "http://www.openwall.com/lists/oss-security/2026/08/04/35",
            "url": "http://www.openwall.com/lists/oss-security/2026/08/04/35"
         },
         {
            "category": "external",
            "summary": "CVE-2026-66902 (NVD)",
            "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-66902"
         }
      ],
      "title": "Google-Auth vulnerability",
      "tracking": {
         "current_release_date": "2026-08-04T00:00:00",
         "generator": {
            "engine": {
               "name": "CSAF Perl Toolkit",
               "version": "0.26"
            }
         },
         "id": "CPANSA-Google-Auth-2026-66902",
         "initial_release_date": "2026-08-04T00:00:00",
         "revision_history": [
            {
               "date": "2026-08-04T00:00:00",
               "number": "1",
               "summary": "First release"
            }
         ],
         "status": "final",
         "version": "1"
      }
   },
   "product_tree": {
      "branches": [
         {
            "branches": [
               {
                  "category": "product_version_range",
                  "name": "vers:cpan/<0.06",
                  "product": {
                     "name": "Google-Auth less than 0.06",
                     "product_id": "CSAFPID-0001",
                     "product_identification_helper": {
                        "purl": "pkg:cpan/Google-Auth"
                     }
                  }
               },
               {
                  "category": "product_version_range",
                  "name": "vers:cpan/>=0.06",
                  "product": {
                     "name": "Google-Auth greater than or equal 0.06",
                     "product_id": "CSAFPID-0002",
                     "product_identification_helper": {
                        "purl": "pkg:cpan/Google-Auth"
                     }
                  }
               }
            ],
            "category": "product_name",
            "name": "Google-Auth"
         }
      ]
   },
   "vulnerabilities": [
      {
         "cve": "CVE-2026-66902",
         "cwe": {
            "id": "CWE-78",
            "name": "Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')"
         },
         "notes": [
            {
               "category": "description",
               "text": "Google::Auth versions before 0.06 for Perl run a command named in an external_account credentials JSON via an ungated system call.\n\nThe Pluggable subclass reads credential_source.executable.command from the credentials JSON and runs it as `system($command)`, a single argument call that passes the whole string to /bin/sh -c. The executable's environment_variables map from the same JSON is copied into %ENV first. No opt-in gate guards the call. make_creds selects the Pluggable subclass whenever credential_source.executable is present, so the path is reached from the standard Application Default Credentials flow, including a \"type\": \"external_account\" configuration read from the file named by GOOGLE_APPLICATION_CREDENTIALS. Configurations without credential_source.executable do not select this subclass and do not reach the call.\n\nAny caller that builds credentials from a configuration it does not fully control runs the embedded command with the privileges of the application process.",
               "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"
               ]
            }
         ]
      }
   ]
}