Is CVE-2023-37898 actively exploited?

No active exploitation of CVE-2023-37898 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2023-37898 be exploited remotely?

Yes. CVE-2023-37898 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2023-37898?

CVE-2023-37898 has a CVSS score of 5.4 (MEDIUM).

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MEDIUM

CVE-2023-37898

CWE-79Published: June 21, 2024· Updated: Jun 17, 2026

5.4

CVSS v3.1

Official 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 <pre> and </pre>, without escaping any interior HTML tags. Thus, an attacker can create a note that closes the opening <pre> 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.

NVD Source

Technical Analysis

CVE-2023-37898 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

The vulnerability has a "Changed" scope, meaning successful exploitation can impact components beyond the vulnerable component itself — such as the host operating system or adjacent services.

From a weakness classification perspective (CWE-79): Cross-site scripting (XSS) vulnerabilities allow attackers to inject malicious scripts into web pages viewed by other users.