Google::Auth versions from 0.11 through 0.12 for Perl accept an authorization code from any local process because the gcloud-auth login callback does not check the OAuth state. The gcloud-auth login and application-default login commands send a state parameter with the authorization request, then take the code from the first request to reach their loopback listener without comparing the returned state. A local attacker can submit an authorization code for their own Google account. The CLI exchanges it and stores the refresh token as the user's credentials, so the user's tools then act as the attacker's account.
History

Sat, 07 Nov 2026 07:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Fri, 06 Nov 2026 15:30:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 8.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'}


Tue, 03 Nov 2026 17:00:00 +0000

Type Values Removed Values Added
First Time appeared Perl
Perl google::auth
Vendors & Products Perl
Perl google::auth

Sun, 01 Nov 2026 17:00:00 +0000

Type Values Removed Values Added
Description Google::Auth versions from 0.11 through 0.12 for Perl accept an authorization code from any local process because the gcloud-auth login callback does not check the OAuth state. The gcloud-auth login and application-default login commands send a state parameter with the authorization request, then take the code from the first request to reach their loopback listener without comparing the returned state. A local attacker can submit an authorization code for their own Google account. The CLI exchanges it and stores the refresh token as the user's credentials, so the user's tools then act as the attacker's account.
Title Google::Auth versions from 0.11 through 0.12 for Perl accept an authorization code from any local process because the gcloud-auth login callback does not check the OAuth state
Weaknesses CWE-346
References

cve-icon MITRE

Status: PUBLISHED

Assigner: CPANSec

Published: 2026-11-01T16:43:34.512Z

Updated: 2026-11-06T14:59:15.283Z

Reserved: 2026-08-15T12:28:17.422Z

Link: CVE-2026-74760

cve-icon Vulnrichment

Updated: 2026-11-06T14:59:10.649Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-11-01T17:16:34.420

Modified: 2026-11-06T15:17:22.777

Link: CVE-2026-74760

cve-icon Redhat

No data.