The Google Cloud Storage for Craft CMS plugin provides a Google Cloud Storage integration for Craft CMS. In versions on the 2.x branch prior to 2.2.1, the `DefaultController->actionLoadBucketData()` endpoint allows unauthenticated users with a valid CSRF token to view a list of buckets that the plugin is allowed to see. Users should update to version 2.2.1 of the plugin to mitigate the issue.
https://github.com/craftcms/google-cloud/security/advisories/GHSA-67cr-jmh8-4jpq
https://github.com/craftcms/google-cloud/commit/651bacaa5f5fd7813e4075e0747b1d706391fb2c
Published: 2026-03-18
Updated: 2026-04-16
Base Score: 5.8
Vector: CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:N
Severity: Medium
Base Score: 8.1
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
Severity: High
Base Score: 6.9
Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:H/SI:N/SA:N
Severity: Medium
EPSS: 0.00018