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CVE-2024-40643— Joplin has a parsing error leading to Cross-site Scripting (XSS)

Quick assessment

Affected
laurent22 joplin
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Joplin是Laurent Cozic个人开发者的一款开源的笔记和待办事项应用程序。 Joplin 3.0.13版本存在跨站脚本漏洞，该漏洞源于处理HTML内容时未正确地转义或处理<符号，导致可以通过在标签中放置illegal标签来执行跨站脚本。

CVSS 9.7 · Critical EPSS 0.79% · P55

Possible ATT&CK Techniques 1 AI

T1189 · Drive-by Compromise
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I. Basic Information for CVE-2024-40643

Vulnerability Information
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Vulnerability Title
Joplin has a parsing error leading to Cross-site Scripting (XSS)
Source: CVE Program / CVE List V5
Vulnerability Description
Joplin is a free, open source note taking and to-do application. Joplin fails to take into account that "<" followed by a non letter character will not be considered html. As such it is possible to do an XSS by putting an "illegal" tag within a tag.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
Joplin 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Joplin是Laurent Cozic个人开发者的一款开源的笔记和待办事项应用程序。 Joplin 3.0.13版本存在跨站脚本漏洞，该漏洞源于处理HTML内容时未正确地转义或处理<符号，导致可以通过在标签中放置illegal标签来执行跨站脚本。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Shenlong Deep Dive — AI Deep Analysis

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Affected Products

Vendor Product Affected Versions CPE Subscribe
laurent22 joplin < 3.0.15 -

II. Public POCs for CVE-2024-40643

# POC Description Source Link Shenlong Link
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Qwen3.6-35B-A3B · 9843 chars
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III. Intelligence Information for CVE-2024-40643

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Vendor Advisories for CVE-2024-40643 (1)

IV. Related Vulnerabilities

Same product: joplin
Same vendor: laurent22
Same weakness: CWE-79

V. Comments for CVE-2024-40643

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