CVE-2025-27134 Privilege escalation in Joplin server via user patch endpoint
Non-admin users can escalate privileges to admin by modifying the is_admin field via the user patch API endpoint.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-27134?
CVE-2025-27134 is a high-severity vulnerability in laurent22 joplin, published on 30 Apr 2025. Any signed-in user can exploit it over the network, with no action from the victim.
Official 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.
Weakness: CWE-284
Which versions are affected by CVE-2025-27134?
It affects 1 product.
Products include Joplin Project Joplin.
How do I fix CVE-2025-27134?
No fix has been published for CVE-2025-27134 yet. Limit exposure of the affected software until one is available.
Is CVE-2025-27134 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-27134 exists.
Public exploit code: 1 Nuclei template.
Other vulnerabilities in laurent22 joplin
- CVE-2022-23340 Joplin Vulnerable to Code Injection
- CVE-2024-40643 Joplin has a parsing error leading to Cross-site Scripting (XSS)
- CVE-2023-45673 Arbitrary code execution on click of PDF links in Joplin
- CVE-2023-37898 Safe mode Cross-site Scripting (XSS) vulnerability in Joplin
- CVE-2023-38506 Cross-site Scripting (XSS) when pasting HTML into the rich text editor in Joplin
Sources
Also known as GHSA-xj67-649m-3p8x.