CVE-2026-105784
mediumJoplin is an open source note-taking and to-do application that organises notes and lists into notebooks.
Joplin is an open source note-taking and to-do application that organises notes and lists into notebooks. Prior to 3.7.13, selecting a note containing a jsoncanvas fence causes the whiteboard text and file-node components in packages/app-desktop/gui/NoteEditor/NoteBody/WhiteboardEditor/nodes/TextNode.tsx and packages/app-desktop/gui/NoteEditor/NoteBody/WhiteboardEditor/nodes/FileNode.tsx to render card content with the full Markdown renderer. The components insert the resulting HTML into the main application document through dangerouslySetInnerHTML. A malicious note can inject style elements and remote CSS imports that modify trusted application chrome, signal when the note is opened, and potentially disclose exposed attribute values. Content Security Policy blocks inline script execution, so the supported impact is CSS injection and UI redressing rather than code execution. This issue is fixed in version 3.7.13.
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N Affected products
Not reported by the source (unknown — not "none").
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://github.com/laurent22/joplin/commit/7fb9ec93e47cec39a548a76e03d7ad660ca0f123 security-advisories@github.com
- https://github.com/laurent22/joplin/pull/16275 security-advisories@github.com
- https://github.com/laurent22/joplin/releases/tag/v3.7.13 security-advisories@github.com
- https://github.com/laurent22/joplin/security/advisories/GHSA-6h4j-86j4-x4q4 security-advisories@github.com
- https://github.com/laurent22/joplin/security/advisories/GHSA-6h4j-86j4-x4q4 134c704f-9b21-4f2e-91b3-4a467353bcc0