CVE-2025-24028

Public Exploit
Cross-site Scripting (XSS) in Rich Text Editor allows arbitrary code execution in Joplin

Description

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 differences between how Joplin's HTML sanitizer handles comments and how the browser handles comments. This affects both the Rich Text Editor and the Markdown viewer. However, unlike the Rich Text Editor, the Markdown viewer is `cross-origin isolated`, which prevents JavaScript from directly accessing functions/variables in the toplevel Joplin `window`. This issue is not present in Joplin 3.1.24 and may have been introduced in `9b50539`. This is an XSS vulnerability that impacts users that open untrusted notes in the Rich Text Editor. This vulnerability has been addressed in version 3.2.12 and all users are advised to upgrade. There are no known workarounds for this vulnerability.

Category

7.8
CVSS
Severity: High
CVSS 3.1 •
EPSS 0.04%
Vendor Advisory github.com
Affected: laurent22 joplin
Published at:
Updated at:

References

Link Tags
https://github.com/laurent22/joplin/security/advisories/GHSA-5w3c-wph9-hq92 vendor advisory exploit
https://github.com/laurent22/joplin/commit/2a058ed8097c2502e152b26394dc1917897f5817 patch
https://github.com/laurent22/joplin/commit/9b505395918bc923f34fe6f3b960bb10e8cf234e patch
https://joplinapp.org/help/dev/spec/note_viewer_isolation product

Frequently Asked Questions

What is the severity of CVE-2025-24028?
CVE-2025-24028 has been scored as a high severity vulnerability.
How to fix CVE-2025-24028?
To fix CVE-2025-24028, 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-2025-24028 being actively exploited in the wild?
It is possible that CVE-2025-24028 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-2025-24028?
CVE-2025-24028 affects laurent22 joplin.
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