CVE-2019-4001Public exploit

Arbitrary Node.js execution via unvalidated launch URL

Published Mar 24, 2020 · Updated Aug 4, 2024

Improper input validation in Druva inSync Client 6.5.0 allows local users to execute arbitrary Node.js code through a crafted launch URL. The Electron main.js logic assigns a command-line URL to inSyncURL without validation, causing the application to load any specified local or remote HTML file. Local account access is required; execution occurs as the client process and can expose client data, while root escalation requires chaining a separate flaw.

CVSS severity7.8
High
EPSS probability0.57%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper input validation in Druva inSync Client 6.5.0 allows local users to execute arbitrary Node.js code through a crafted launch URL. The Electron main.js logic assigns a command-line URL to inSyncURL without validation, causing the application to load any specified local or remote HTML file. Local account access is required; execution occurs as the client process and can expose client data, while root escalation requires chaining a separate flaw.

The record

CVE
CVE-2019-4001
Published
Mar 24, 2020
Updated
Aug 4, 2024
Vendor
Druva
Product
Druva inSync Client
Classifications
CWE-20, T1059.007
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 24, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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

  1. Affected versionversion=6.5.0

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Druva · Druva inSync Clientversion=6.5.0

Published CVSS scores

4.6NIST NVDAV:L/AC:L/Au:N/C:P/I:P/A:P
7.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-20Improper Input Validation
T1059.007JavaScript/JScript

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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