CVE-2024-55630: DOM Clobbering leads to temporary DOS in the note viewer in Joplin

Severity: medium (CVSS 5.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2025-02-07 · updated 2026-06-17
Weakness: CWE-20

Description

Joplin is a free, open source note taking and to-do application, which can handle a large number of notes organised into notebooks. Joplin's HTML sanitizer allows the `name` attribute to be specified. If `name` is set to the same value as an existing `document` property (e.g. `querySelector`), that property is replaced with the element. This vulnerability's only known impact is denial of service. The note viewer fails to refresh until closed and re-opened with a different note. This issue has been addressed in version 3.2.8 and all users are advised to upgrade. There are no known workarounds for this vulnerability.

Affected products

laurent22 joplin: before 3.2.8 — fixed in 3.2.8

How to fix

Upgrade to a fixed version: laurent22 joplin 3.2.8. Check the vendor advisory for mitigations.

References

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