CVE-2023-38506CWE-79

Cross-site Scripting (XSS) when pasting HTML into the rich text editor in Joplin

High · published June 21, 2024

CVSS v3.1
8.2
EPSS
0%
Percentile
35.4
In the wild
Unconfirmed
What it is

Joplin is a free, open source note taking and to-do application. A Cross-site Scripting (XSS) vulnerability allows pasting untrusted data into the rich text editor to execute arbitrary code. HTML pasted into the rich text editor is not sanitized (or not sanitized properly). As such, the `onload` attribute of pasted images can execute arbitrary code. Because the TinyMCE editor frame does not use the `sandbox` attribute, such scripts can access NodeJS's `require` through the `top` variable. From this, an attacker can run arbitrary commands. This issue has been addressed in version 2.12.10 and users are advised to upgrade. There are no known workarounds for this vulnerability.

The record
Technical detail
CVSS v3.1
8.2 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:L
CVSS v4.0
Not supplied
EPSS
0.00422 · 35.4th percentile
Weakness
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Published
2024-06-21T19:43Z
EPSS history
Timeline
  • 21 JUN 19:43Z
    Cross-site Scripting (XSS) when pasting HTML into the rich text editor in Joplin
    cvelistv5