CVE-2026-41128— Craft CMS has a Missing Authorization Check on User Group Removal via save-permissions Action
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I. Basic Information for CVE-2026-41128
Vulnerability Information
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Vulnerability Title
Craft CMS has a Missing Authorization Check on User Group Removal via save-permissions Action
Source: NVD (National Vulnerability Database)
Vulnerability Description
Craft CMS is a content management system (CMS). In versions 5.6.0 through 5.9.14, the `actionSavePermissions()` endpoint allows a user with only `viewUsers` permission to remove arbitrary users from all user groups. While `_saveUserGroups()` enforces per-group authorization for additions, it performs no equivalent authorization check for removals, so submitting an empty `groups` value removes all existing group memberships. Version 5.9.15 contains a patch.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
授权机制缺失
Source: NVD (National Vulnerability Database)
Vulnerability Title
Craft CMS 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Craft CMS是Craft CMS开源的一套内容管理系统（CMS）。 Craft CMS 5.6.0版本至5.9.14版本存在安全漏洞，该漏洞源于actionSavePermissions端点允许仅具有viewUsers权限的用户从所有用户组中移除任意用户，可能导致权限提升。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2026-41128
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- Fixed GHSA-jq2f-59pj-p3m3 · craftcms/cms@b135384 · GitHubx_refsource_MISC
- https://nvd.nist.gov/vuln/detail/CVE-2026-41128
Same Patch Batch · craftcms · 2026-04-21 · 3 CVEs total
| CVE-2026-41130 | Craft CMS has a host header injection leading to SSRF via resource-js endpoint | |
| CVE-2026-41129 | Craft CMS has Server-Side Request Forgery (SSRF) with Asset Uploads Mutations |
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