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I. Basic Information for CVE-2025-27134
Vulnerability Information
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Vulnerability Title
Privilege escalation in Joplin server via user patch endpoint
Source: NVD (National Vulnerability Database)
Vulnerability Description
Joplin is a free, open source note taking and to-do application, which can handle a large number of notes organised into notebooks. Prior to version 3.3.3, a privilege escalation vulnerability exists in the Joplin server, allowing non-admin users to exploit the API endpoint `PATCH /api/users/:id` to set the `is_admin` field to 1. The vulnerability allows malicious low-privileged users to perform administrative actions without proper authorization. This issue has been patched in version 3.3.3.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
访问控制不恰当
Source: NVD (National Vulnerability Database)
Vulnerability Title
Joplin 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Joplin是Laurent Cozic个人开发者的一款开源的笔记和待办事项应用程序。 Joplin 3.3.3之前版本存在安全漏洞，该漏洞源于非管理员用户可利用API端点设置is_admin字段，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
VendorProductAffected VersionsCPESubscribe
laurent22joplin < 3.3.3 -
II. Public POCs for CVE-2025-27134
#POC DescriptionSource LinkShenlong Link
1Joplin is a free, open source note taking and to-do application, which can handle a large number of notes organised into notebooks. Prior to version 3.3.3, a privilege escalation vulnerability exists in the Joplin server, allowing non-admin users to exploit the API endpoint `PATCH /api/users/-id` to set the `is_admin` field to 1. The vulnerability allows malicious low-privileged users to perform administrative actions without proper authorization. This issue has been patched in version 3.3.3. https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2025/CVE-2025-27134.yamlPOC Details
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III. Intelligence Information for CVE-2025-27134
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IV. Related Vulnerabilities
Same product: joplin
Same vendor: laurent22
Same weakness: CWE-284
V. Comments for CVE-2025-27134

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