CVE-2021-34084Network attack vector

Unauthenticated command execution via metadata concatenation

Published Jun 1, 2022 · Updated Aug 4, 2024

OS command injection in Turistforeningen node-s3-uploader 2.0.3 and earlier allows remote attackers to execute arbitrary commands. The metadata() path concatenates attacker-controlled metadata into an operating-system command without neutralizing shell metacharacters. Exploitation requires a consuming application to pass attacker-controlled metadata, and injected commands run with the Node.js process's privileges.

CVSS severity9.8
Critical
EPSS probability3.10%
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 Turistforeningen node-s3-uploader 2.0.3 and earlier allows remote attackers to execute arbitrary commands. The metadata() path concatenates attacker-controlled metadata into an operating-system command without neutralizing shell metacharacters. Exploitation requires a consuming application to pass attacker-controlled metadata, and injected commands run with the Node.js process's privileges.

The record

CVE
CVE-2021-34084
Published
Jun 1, 2022
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-78, T1059
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 1, 2022CVE 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

10.0NIST NVDAV:N/AC:L/Au:N/C:C/I:C/A:C
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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

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

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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