🛡️ CVE-2023-37898
🟠 CVSS 8.2 — High ⚠️ Exploit Public CWE-79 NVD
8.2
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

Joplin is a free, open source note taking and to-do application. A Cross-site Scripting (XSS) vulnerability allows an untrusted note opened in safe mode to execute arbitrary code. `packages/renderer/MarkupToHtml.ts` renders note content in safe mode by surrounding it with

 and 
, without escaping any interior HTML tags. Thus, an attacker can create a note that closes the opening
 tag, then includes HTML that runs JavaScript. Because the rendered markdown iframe has the same origin as the toplevel document and is not sandboxed, any scripts running in the preview iframe can access the top variable and, thus, access the toplevel NodeJS `require` function. `require` can then be used to import modules like fs or child_process and run arbitrary commands. This issue has been addressed in version 2.12.9 and all users are advised to upgrade. There are no known workarounds for this vulnerability.

Details

Severity HIGH
CVSS Score 8.2
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:L
CWE CWE-79
Public Exploit ⚠️ Yes
Source NVD
Published 2024-06-21
Updated 2026-06-08
Modified 2025-04-11
Fix URL N/A

Affected Packages

Software From version Fixed in
joplin 2.12.9

Similar Threats

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