CVE-2024-49362Public exploit

Arbitrary code execution via unsanitized Mermaid links

Published Nov 14, 2024 · Updated Nov 14, 2024

Code injection in Joplin Desktop before 3.1.0 allows context-dependent attackers to execute arbitrary shell commands through untrusted notes. The Markdown preview fails to remove data-from-md from anchor tags generated by Mermaid, causing those links to open untrusted local HTML inside a Node-enabled Electron window. Exploitation requires a user to open an untrusted note, retain a malicious HTML file locally, and click the rendered link; successful execution inherits the desktop application's access.

CVSS severity7.7
High
EPSS probability1.03%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Code injection in Joplin Desktop before 3.1.0 allows context-dependent attackers to execute arbitrary shell commands through untrusted notes. The Markdown preview fails to remove data-from-md from anchor tags generated by Mermaid, causing those links to open untrusted local HTML inside a Node-enabled Electron window. Exploitation requires a user to open an untrusted note, retain a malicious HTML file locally, and click the rendered link; successful execution inherits the desktop application's access.

The record

CVE
CVE-2024-49362
Published
Nov 14, 2024
Updated
Nov 14, 2024
Vendor
Joplin Project
Product
Joplin
Classifications
CWE-94, CWE-79, T1059, T1204.002
Attack vector
local
Privileges
Unavailable

Timeline

How it unfolded

  1. Nov 14, 2024CVE publishedPublication date reported by the CVE source.
  2. Nov 14, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <3.1
  2. Affected versionversion=< 3.1

What conditions does exploitation require?

Attack vectorlocal
Required privilegesUnavailable in this record.

What is affected?

Joplin Project · Joplinversion=0 <3.1; version=< 3.1

Published CVSS scores

9.6NISTCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
7.7GitHub, Inc.CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-94Improper Control of Generation of Code ('Code Injection')
CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1059Command and Scripting Interpreter
T1204.002User Execution: Malicious File

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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