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CVE-2023-0821

Nomad Client Vulnerable to Decompression Bombs in Artifact Block

MEDIUM
6.5
CVSS Score
Published: February 16, 2023 at 09:23 PM UTC
Updated: June 17, 2026 at 05:26 AM UTC
1 product affected across 1 vendorNomad

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Severity
MEDIUM6.5
Exploit prediction
EPSS 0.8%
SSVC
No known exploit

Description

HashiCorp Nomad and Nomad Enterprise 1.2.15 up to 1.3.8, and 1.4.3 jobs using a maliciously compressed artifact stanza source can cause excessive disk usage. Fixed in 1.2.16, 1.3.9, and 1.4.4.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Nomad· Hashicorp
95%
v ≤ 1.2.15v ≤ 1.3.8v ≤ 1.4.3v < 1.2.151.3.0 ≤ v < 1.3.91.4.0 ≤ v < 1.4.4
Affected range stops below 1.2.15, so it looks safe — our inference, not a vendor statement
Affected range stops below 1.3.9, so it looks safe — our inference, not a vendor statement
Affected range stops below 1.4.4, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (1)

Vendor Advisory
Source: [email protected]
https://discuss.hashicorp.com/t/hcsec-2023-05-nomad-client-vulnerable-to-decompression-bombs-in-artifact-block/50292

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

6.5MEDIUMHashiCorp
Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-409NVD-CWE-Other

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