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

2026-08-04T20:49:43Z

Modified

2026-08-28T11:30:21Z

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 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.

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

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

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

Show details

{
    "source":  "REFERENCES"
}

Database specific

source

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