CVE-2023-38889Public exploitNetwork attack vector

Unauthenticated command execution via unsanitized username

Published Aug 15, 2023 · Updated Oct 9, 2024

OS command injection in Alluxio 2.9.3 and earlier allows remote attackers to execute arbitrary commands through a crafted username. The CommonUtils.getUnixGroups method embeds the username in a bash -c command without neutralizing shell metacharacters. No privileges or user interaction are required when an exposed application passes attacker-controlled usernames to this utility, and commands run with the Alluxio process's permissions.

CVSS severity9.8
Critical
EPSS probability1.08%
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 Alluxio 2.9.3 and earlier allows remote attackers to execute arbitrary commands through a crafted username. The CommonUtils.getUnixGroups method embeds the username in a bash -c command without neutralizing shell metacharacters. No privileges or user interaction are required when an exposed application passes attacker-controlled usernames to this utility, and commands run with the Alluxio process's permissions.

The record

CVE
CVE-2023-38889
Published
Aug 15, 2023
Updated
Oct 9, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-94, T1059.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 15, 2023CVE publishedPublication date reported by the CVE source.
  2. Oct 9, 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

9.8NVDCVSS: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.

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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-94Improper Control of Generation of Code ('Code Injection')
T1059.004Command and Scripting Interpreter: Unix Shell

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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