CVE-2023-0821Network attack vector

Client crash via compressed artifact expansion

Published Feb 16, 2023 · Updated Mar 18, 2025

Resource exhaustion in HashiCorp Nomad and Nomad Enterprise affected releases allows remote authenticated users to crash client agents. A submitted job's artifact stanza directs go-getter to retrieve and automatically extract a maliciously compressed source without effective decompression limits. An account with submit-job capability can consume excessive client disk space until the Nomad client agent crashes.

CVSS severity6.5
Medium
EPSS probability0.80%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Resource exhaustion in HashiCorp Nomad and Nomad Enterprise affected releases allows remote authenticated users to crash client agents. A submitted job's artifact stanza directs go-getter to retrieve and automatically extract a maliciously compressed source without effective decompression limits. An account with submit-job capability can consume excessive client disk space until the Nomad client agent crashes.

The record

CVE
CVE-2023-0821
Published
Feb 16, 2023
Updated
Mar 18, 2025
Vendor
HashiCorp
Product
Nomad
Classifications
CWE-409, T1499.004
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 16, 2023CVE publishedPublication date reported by the CVE source.
  2. Mar 18, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=0 <=1.2.15
  2. Affected versionversion=0 <=1.3.8
  3. Affected versionversion=0 <=1.4.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

HashiCorp · Nomadversion=0 <=1.2.15; version=0 <=1.3.8; version=0 <=1.4.3
HashiCorp · Nomad Enterpriseversion=0 <=1.2.15; version=0 <=1.3.8; version=0 <=1.4.3

Published CVSS scores

6.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
6.5HashiCorp Inc.CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/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)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-409Improper Handling of Highly Compressed Data (Data Amplification)
T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

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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