CVE-2020-7631Public exploit

Arbitrary command execution via shell-interpolated path

Published Apr 6, 2020 · Updated Aug 4, 2024

Command injection in diskusage-ng 0.2.4 and earlier allows attackers to execute arbitrary OS commands through a crafted path argument. The POSIX diskusage function concatenates the path into a quoted df command passed to child_process.exec, so shell metacharacters reach the command interpreter. Exploitation requires a consuming Node.js application to pass attacker-controlled input as the library path; commands run with that application's privileges.

CVSS severity9.8
Critical
EPSS probability3.86%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Command injection in diskusage-ng 0.2.4 and earlier allows attackers to execute arbitrary OS commands through a crafted path argument. The POSIX diskusage function concatenates the path into a quoted df command passed to child_process.exec, so shell metacharacters reach the command interpreter. Exploitation requires a consuming Node.js application to pass attacker-controlled input as the library path; commands run with that application's privileges.

The record

CVE
CVE-2020-7631
Published
Apr 6, 2020
Updated
Aug 4, 2024
Vendor
Ivan Velichko
Product
diskusage-ng
Classifications
CWE-78, T1059
Attack vector
Unavailable
Privileges
Unavailable

Timeline

How it unfolded

  1. Apr 6, 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=All versions including 0.2.4

What conditions does exploitation require?

Attack vectorUnavailable in this record.
Required privilegesUnavailable in this record.

What is affected?

Ivan Velichko · diskusage-ngversion=All versions including 0.2.4

Published CVSS scores

7.5NIST NVDAV:N/AC:L/Au:N/C:P/I:P/A:P
9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/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)
VectorUnavailable
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
T1059Command and Scripting Interpreter

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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