Joplin
CVE-2025-27134
HIGH
Vulnerability Assessment
| Weakness |
CWE
OWASP Top 10:2025
A01:2025 - Broken Access Control
ASVS 5.0
V8 - Authorization Access control enforcement
MITRE ATT&CK
1 technique across 1 tactic: Defense Evasion The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. |
| Impact | CVSS score of 8.8 (HIGH). Attack characteristics: network attack vector, low complexity, low privileges required, no user interaction not required. Public proof-of-concept exploit code is available. EPSS exploitation probability: 13.42%. |
| Exploit ScenarioDerived | This vulnerability can be exploited remotely over the network. Successful exploitation could compromise the high-severity affected system. |
Get an e-mail when this CVE is exploited, patched or re-scored. Free account.
Alert meAnalysisAIv1 – Mar 28, 2026
Joplin is a free, open source note taking and to-do application, which can handle a large number of notes organised into notebooks. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available and EPSS exploitation probability 13.4%.
RemediationAI
A vendor patch is available. Apply the latest security update as soon as possible. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.
Affects your stack
Find out whether the stacks and servers you run are on an affected version.
Checking this CVE against your own stacks and servers is part of the Basic plan and up.
Technical ContextAI · show details
This vulnerability is classified under CWE-284. 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. Affected products include: Joplin Project Joplin. Version information: version 3.3.3.
Know when Joplin gets its next vulnerability
- Watch products and get an email when something new is published
- Check this CVE against your own stack and servers
- Exploit and PoC references, threat intelligence from 22 sources
No credit card · 7-day full trial
Severity by source
AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Primary rating from GitHub Advisory · only source for this CVE.
CVSS VectorGitHub Advisory
Lifecycle Timeline
3DescriptionGitHub Advisory
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.
Executive ViewAI
Organizations using Joplin face significant risk from CVE-2025-27134, a improper access control vulnerability rated CVSS 8.8. Successful exploitation could significantly impact the confidentiality, integrity, or availability of affected systems. With an EPSS score of 13%, exploitation is likely in exposed deployments. A patch is available and should be applied as part of regular vulnerability management.
Apply vendor patch. If immediate patching is not feasible: (1) Restrict access to affected endpoints; (2) Implement additional authorization checks; (3) Enable audit logging.
Threat Intelligence Overview
NVD
CVE.org
EPSS
GitHub
How this decision was reached
The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
Authentication bypass attacks exploit flaws in the verification mechanisms that control access to systems and applications.
Privilege escalation occurs when an attacker leverages flaws in access control mechanisms to gain permissions beyond what they were originally granted.
Affected Products (CPE)GitHub Advisory
Joplin is a free, open source note taking and to-do application. Rated critical severity (CVSS 9.6), this vulnerability
Joplin is a free, open source note taking and to-do application. Rated critical severity (CVSS 9.6), this vulnerability
Joplin v2.8.8 allows attackers to execute arbitrary commands via a crafted payload injected into the Node titles. Rated
Joplin Server instances prior to 3.7.2 expose an SSO login-code redemption endpoint (GET /api/login_with_code/:id) that
Joplin is an open source, privacy-focused note taking app with sync capabilities for Windows, macOS, Linux, Android and
Joplin version 2.8.8 allows an external attacker to execute arbitrary commands remotely on any client that opens a link
Joplin is a free, open source note taking and to-do application, which can handle a large number of notes organised into
Joplin 1.2.6 for Desktop allows XSS via a LINK element in a note. Rated medium severity (CVSS 6.1), this vulnerability i
An XSS issue in Joplin desktop 1.0.190 to 1.0.245 allows arbitrary code execution via a malicious HTML embed tag. Rated
Joplin version prior to 1.0.90 contains a XSS evolving into code execution due to enabled nodeIntegration for that parti
Joplin through 1.0.184 allows Arbitrary File Read via XSS. Rated medium severity (CVSS 5.4), this vulnerability is remot
The package joplin before 2.3.2 are vulnerable to Cross-site Request Forgery (CSRF) due to missing CSRF checks in variou
Exploit-DB