What is CVE-2026-66902?

CVE-2026-66902 is a critical-severity vulnerability in Cjcollier Google::auth, classified under OS Command Injection. CVSS score: 9.8/10. Published 2026-08-04.

How severe is CVE-2026-66902?

Critical severity. CVSS v3 base score is 9.8 out of 10.

RCE in Cjcollier Google::auth

CVE-2026-66902

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…

Vulnerability class: Command Injection (OS Command Injection)

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Cjcollier Google::auth — versions 0

Weakness classification (CWE)

CWE-78 — OS Command Injection
CWE-829 — Inclusion of Functionality from Untrusted Control Sphere

References

9b29abf9-4ab0-4765-b253-1875cd9b441e (patch)
9b29abf9-4ab0-4765-b253-1875cd9b441e
af854a3a-2127-422b-91ae-364da2661108

Frequently asked questions

What is CVE-2026-66902?: CVE-2026-66902 is a critical-severity vulnerability in Cjcollier Google::auth, classified under OS Command Injection. CVSS score: 9.8/10. Published 2026-08-04.
How severe is CVE-2026-66902?: Critical severity. CVSS v3 base score is 9.8 out of 10.