CVE-2026-42174— Kirby: User avatar creation, replacement and deletion are not gated by user update permissions
Possible ATT&CK Techniques 1AI
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I. Basic Information for CVE-2026-42174
Vulnerability Information
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Vulnerability Title
Kirby: User avatar creation, replacement and deletion are not gated by user update permissions
Source: NVD (National Vulnerability Database)
Vulnerability Description
Kirby is an open-source content management system. Prior to versions 4.9.0 and 5.4.0, user avatar creation, replacement and deletion are not gated by user update permissions. This issue has been patched in versions 4.9.0 and 5.4.0.
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
Kirby 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Kirby是Kirby开源的一套基于文件的内容管理系统（CMS）。 Kirby 4.9.0之前版本和5.4.0之前版本存在安全漏洞，该漏洞源于用户头像创建、替换和删除未受用户更新权限控制。
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-2026-42174
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Vendor Advisories for CVE-2026-42174 (1)
Vendor Pages for CVE-2026-42174 (1)
Same Patch Batch · getkirby · 2026-05-09 · 4 CVEs total
| CVE-2026-42069 | Kirby: Read access to site, user and role information is not gated by permissions | |
| CVE-2026-42137 | Kirby: `pages.access/list` and `files.access/list` permissions are not consistently checke | |
| CVE-2026-42051 | Kirby: System API endpoint leaks license data and installed version to authenticated users |
IV. Related Vulnerabilities
Same product: kirby
- CVE-2026-42137
Kirby: `pages.access/list` and `files.access/list` permissio - CVE-2026-42051
Kirby: System API endpoint leaks license data and installed - CVE-2026-42069
Kirby: Read access to site, user and role information is not - CVE-2026-41325
Kirby is vulnerable to authorization bypass during page, fil - CVE-2026-40099
Kirby's page creation API bypasses the changeStatus permissi
Same vendor: getkirby
- CVE-2026-42137
Kirby: `pages.access/list` and `files.access/list` permissio - CVE-2026-42051
Kirby: System API endpoint leaks license data and installed - CVE-2026-42069
Kirby: Read access to site, user and role information is not - CVE-2026-41325
Kirby is vulnerable to authorization bypass during page, fil - CVE-2026-40099
Kirby's page creation API bypasses the changeStatus permissi
Same weakness: CWE-862
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V. Comments for CVE-2026-42174
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