CVE-2026-74760

Full vulnerability record from the local CVENow database.

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.

Severity

Not scored

CVSS score

Not available

Vulnerability status

Received

Source identifier

9b29abf9-4ab0-4765-b253-1875cd9b441e

Published

2026-11-01 17:16:34.420000

Last modified

2026-11-01 17:16:34.420000

View original CVE JSON

{
  "id": "CVE-2026-74760",
  "sourceIdentifier": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
  "published": "2026-11-01T17:16:34.420",
  "lastModified": "2026-11-01T17:16:34.420",
  "vulnStatus": "Received",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "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.\n\nThe 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.\n\nA 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."
    }
  ],
  "affected": [
    {
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "collectionURL": "https://cpan.org/modules",
          "packageName": "Google-Auth",
          "modules": [
            "Google::Auth"
          ],
          "programFiles": [
            "bin/gcloud-auth.pl"
          ],
          "repo": "https://github.com/GoogleCloudPlatform/google-auth-library-perl",
          "packageURL": "pkg:cpan/Google-Auth",
          "versions": [
            {
              "version": "0.11",
              "lessThanOrEqual": "0.12",
              "versionType": "custom",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {},
  "weaknesses": [
    {
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-346"
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://metacpan.org/release/CJCOLLIER/Google-Auth-0.12/source/bin/gcloud-auth.pl",
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e"
    }
  ]
}