CVE-2026-66902

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Source

https://cve.org/CVERecord?id=CVE-2026-66902

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-66902.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2026-66902

Published

2026-08-04T20:49:43.171Z

Modified

2026-08-07T03:30:35.542266627Z

Severity

9.8 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator

Summary

Google::Auth versions before 0.06 for Perl run a command named in an external_account credentials JSON via an ungated system call

Details

Google::Auth versions before 0.06 for Perl run a command named in an external_account credentials JSON via an ungated system call.

The Pluggable subclass reads credentialsource.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 environmentvariables map from the same JSON is copied into %ENV first. No opt-in gate guards the call. makecreds selects the Pluggable subclass whenever credentialsource.executable is present, so the path is reached from the standard Application Default Credentials flow, including a "type": "externalaccount" configuration read from the file named by GOOGLEAPPLICATIONCREDENTIALS. Configurations without credentialsource.executable do not select this subclass and do not reach the call.

Any caller that builds credentials from a configuration it does not fully control runs the embedded command with the privileges of the application process.

Database specific

{
    "unresolved_ranges": [
        {
            "extracted_events": [
                {
                    "fixed": "0.06"
                }
            ],
            "source": "AFFECTED_FIELD"
        },
        {
            "extracted_events": [
                {
                    "fixed": "0.06"
                }
            ],
            "source": "DESCRIPTION"
        }
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/66xxx/CVE-2026-66902.json",
    "cna_assigner": "CPANSec",
    "cwe_ids": [
        "CWE-78",
        "CWE-829"
    ]
}

References

Affected packages

Git / github.com/googlecloudplatform/google-auth-library-perl

Affected ranges

Type

GIT

Repo

https://github.com/googlecloudplatform/google-auth-library-perl

Events

Introduced

Fixed

c95c77e70bec94f17e239d88050f843ea1cade95

Database specific

{
    "source": "REFERENCES"
}

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-66902.json"