🛡️ CVE-2023-39517
🟠 CVSS 8.2 — High ⚠️ Exploit Public CWE-79 NVD
8.2
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

Joplin is a free, open source note taking and to-do application. A Cross site scripting (XSS) vulnerability in affected versions allows clicking on an untrusted image link to execute arbitrary shell commands. The HTML sanitizer (`packages/renderer/htmlUtils.ts::sanitizeHtml`) preserves `` `` links. However, unlike `` links, the `target` and `href` attributes are not removed. Additionally, because the note preview pane isn't sandboxed to prevent top navigation, links with `target` set to `_top` can replace the toplevel electron page. Because any toplevel electron page, with Joplin's setup, has access to `require` and can require node libraries, a malicious replacement toplevel page can import `child_process` and execute arbitrary shell commands. This issue has been fixed in commit 7c52c3e9a81a52ef1b42a951f9deb9d378d59b0f which is included in release version 2.12.8. Users are advised to upgrade. There are no known workarounds for this vulnerability.

Details

Severity HIGH
CVSS Score 8.2
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:L
CWE CWE-79
Public Exploit ⚠️ Yes
Source NVD
Published 2024-06-21
Updated 2026-06-08
Modified 2024-11-21

Affected Packages

Software From version Fixed in
joplin 2.12.8

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