CVE-2023-38506

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

Description

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.

Category

8.2
CVSS
Severity: High
CVSS 3.1 •
EPSS 0.43%
Vendor Advisory github.com
Affected: laurent22 joplin
Published at:
Updated at:

References

Link Tags
https://github.com/laurent22/joplin/security/advisories/GHSA-m59c-9rrj-c399 vendor advisory exploit

Frequently Asked Questions

What is the severity of CVE-2023-38506?
CVE-2023-38506 has been scored as a high severity vulnerability.
How to fix CVE-2023-38506?
To fix CVE-2023-38506, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2023-38506 being actively exploited in the wild?
It is possible that CVE-2023-38506 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2023-38506?
CVE-2023-38506 affects laurent22 joplin.
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