CVE-2020-7794Public exploitNetwork attack vector

Arbitrary command execution via unsanitized module name

Published Jan 8, 2021 · Updated Sep 16, 2024

OS command injection in all versions of Buns allows attackers to execute arbitrary commands through a crafted module name passed to install(). The exported install(requestedModule) function in lib/index.js inserts the requested module name into an executed shell command without neutralizing metacharacters. Exploitation requires a consuming application to pass attacker-controlled input to this function; commands run with that application's privileges.

CVSS severity9.8
Critical
EPSS probability1.58%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

OS command injection in all versions of Buns allows attackers to execute arbitrary commands through a crafted module name passed to install(). The exported install(requestedModule) function in lib/index.js inserts the requested module name into an executed shell command without neutralizing metacharacters. Exploitation requires a consuming application to pass attacker-controlled input to this function; commands run with that application's privileges.

The record

CVE
CVE-2020-7794
Published
Jan 8, 2021
Updated
Sep 16, 2024
Vendor
Buns Project
Product
Buns
Classifications
CWE-78, T1059
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 8, 2021CVE publishedPublication date reported by the CVE source.
  2. Sep 16, 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=0 <unspecified

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Buns Project · Bunsversion=0 <unspecified

Published CVSS scores

9.8SnykCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7.5NIST NVDAV:N/AC:L/Au:N/C:P/I:P/A:P

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.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
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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