{"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"}}]}}

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