{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-66902",
        "assignerOrgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
        "state": "PUBLISHED",
        "assignerShortName": "CPANSec",
        "dateReserved": "2026-07-28T08:28:27.249Z",
        "datePublished": "2026-08-04T20:49:43.171Z",
        "dateUpdated": "2026-08-04T22:24:41.647Z"
    },
    "containers": {
        "cna": {
            "affected": [
                {
                    "collectionURL": "https://cpan.org/modules",
                    "defaultStatus": "unaffected",
                    "packageName": "Google-Auth",
                    "product": "Google::Auth",
                    "programFiles": [
                        "lib/Google/Auth/ExternalAccountCredentials/Pluggable.pm"
                    ],
                    "programRoutines": [
                        {
                            "name": "Google::Auth::ExternalAccountCredentials::Pluggable::retrieve_subject_token"
                        }
                    ],
                    "repo": "https://github.com/GoogleCloudPlatform/google-auth-library-perl",
                    "vendor": "CJCOLLIER",
                    "versions": [
                        {
                            "lessThan": "0.06",
                            "status": "affected",
                            "version": "0",
                            "versionType": "custom"
                        }
                    ]
                }
            ],
            "descriptions": [
                {
                    "lang": "en",
                    "value": "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."
                }
            ],
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-78",
                            "description": "CWE-78 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')",
                            "lang": "en",
                            "type": "CWE"
                        }
                    ]
                },
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-829",
                            "description": "CWE-829 Inclusion of Functionality from Untrusted Control Sphere",
                            "lang": "en",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
                "shortName": "CPANSec",
                "dateUpdated": "2026-08-04T20:49:43.171Z"
            },
            "references": [
                {
                    "tags": [
                        "patch"
                    ],
                    "url": "https://github.com/GoogleCloudPlatform/google-auth-library-perl/commit/c95c77e70bec94f17e239d88050f843ea1cade95.patch"
                },
                {
                    "url": "https://metacpan.org/release/CJCOLLIER/Google-Auth-0.06/diff/CJCOLLIER/Google-Auth-0.05"
                }
            ],
            "solutions": [
                {
                    "lang": "en",
                    "value": "Upgrade to Google-Auth 0.06 or later, which throws unless the environment variable GOOGLE_EXTERNAL_ACCOUNT_ALLOW_EXECUTABLES is set to 1."
                }
            ],
            "source": {
                "discovery": "UNKNOWN"
            },
            "timeline": [
                {
                    "lang": "en",
                    "time": "2026-07-28T00:00:00.000Z",
                    "value": "Version 0.06 released with fix, which is not noted in the changelog."
                }
            ],
            "title": "Google::Auth versions before 0.06 for Perl run a command named in an external_account credentials JSON via an ungated system call",
            "workarounds": [
                {
                    "lang": "en",
                    "value": "For deployments that cannot upgrade to 0.06, apply the upstream fix commit, or ensure that every credentials configuration reaching the Application Default Credentials flow comes from a trusted source."
                }
            ],
            "x_generator": {
                "engine": "cpansec-cna-tool 0.1"
            }
        },
        "adp": [
            {
                "title": "CVE Program Container",
                "references": [
                    {
                        "url": "http://www.openwall.com/lists/oss-security/2026/08/04/35"
                    }
                ],
                "providerMetadata": {
                    "orgId": "af854a3a-2127-422b-91ae-364da2661108",
                    "shortName": "CVE",
                    "dateUpdated": "2026-08-04T22:24:41.647Z"
                }
            }
        ]
    }
}