Joplin
CVE-2025-25187
HIGH
Vulnerability Assessment
| Weakness |
CWE
OWASP Top 10:2025
A05:2025 - Injection
ASVS 5.0
V1 - Encoding and Sanitization Output encoding, context-aware escaping
MITRE ATT&CK
2 techniques across 2 tactics: Initial Access, Execution The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. |
| Impact | CVSS score of 7.8 (HIGH). Attack characteristics: local attack vector, low complexity, no privileges required, user interaction required. Public proof-of-concept exploit code is available. EPSS exploitation probability: 0.59%. |
| Exploit ScenarioDerived | A local attacker with access to the system could inject malicious scripts into web pages viewed by other users. No authentication is required to exploit this vulnerability. |
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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 7.8), this vulnerability is no authentication required, low attack complexity. Public exploit code available.
RemediationAI
A vendor patch is available. Apply the latest security update as soon as possible. Sanitize all user input, use Content-Security-Policy headers, encode output contextually (HTML, JS, URL). Use frameworks with built-in XSS protection.
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 as Cross-Site Scripting (XSS) (CWE-79), which allows attackers to inject malicious scripts into web pages viewed by other users. Joplin is a free, open source note taking and to-do application, which can handle a large number of notes organised into notebooks. This vulnerability is caused by adding note titles to the document using React's dangerouslySetInnerHTML, without first escaping HTML entities. Joplin lacks a Content-Security-Policy with a restrictive script-src. This allows arbitrary JavaScript execution via inline onclick/onload event handlers in unsanitized HTML. Additionally, Joplin's main window is created with nodeIntegration set to true, allowing arbitrary JavaScript execution to result in arbitrary code execution. Anyone who 1) receives notes from unknown sources and 2) uses <kbd>ctrl</kbd>-<kbd>p</kbd> to search is impacted. This issue has been addressed in version 3.1.24 and all users are advised to upgrade. There are no known workarounds for this vulnerability. Affected products include: Joplin Project Joplin. Version information: version 3.1.24.
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- Exploit and PoC references, threat intelligence from 22 sources
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Severity by source
AV:L/AC:L/PR:N/UI:R/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. This vulnerability is caused by adding note titles to the document using React's dangerouslySetInnerHTML, without first escaping HTML entities. Joplin lacks a Content-Security-Policy with a restrictive script-src. This allows arbitrary JavaScript execution via inline onclick/onload event handlers in unsanitized HTML. Additionally, Joplin's main window is created with nodeIntegration set to true, allowing arbitrary JavaScript execution to result in arbitrary code execution. Anyone who 1) receives notes from unknown sources and 2) uses <kbd>ctrl</kbd>-<kbd>p</kbd> to search is impacted. This issue has been addressed in version 3.1.24 and all users are advised to upgrade. There are no known workarounds for this vulnerability.
Executive ViewAI
Organizations using Joplin face notable risk from CVE-2025-25187, a cross-site scripting vulnerability rated CVSS 7.8. Attackers could inject malicious scripts to steal user sessions, credentials, or perform actions on behalf of authenticated users. Proof-of-concept code is publicly available, increasing the risk of exploitation. A patch is available and should be applied as part of regular vulnerability management.
Apply vendor patch. If immediate patching is not feasible: (1) Implement Content-Security-Policy headers; (2) Enable HttpOnly and SameSite cookie attributes; (3) Deploy WAF XSS/CSRF rules.
Threat Intelligence Overview
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
Cross-Site Scripting occurs when an application accepts untrusted data and sends it to a web browser without proper validation or encoding.
Remote Code Execution represents the critical moment when an attacker successfully runs arbitrary code on a target system without physical access.
Affected Products (CPE)GitHub Advisory
Joplin is a free, open source note taking and to-do application, which can handle a large number of notes organised into
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
GitHub PoC
Exploit-DB