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CVE-2021-43415

27
FAUCET Score

CVE-2021-43415 describes a critical vulnerability in HashiCorp Nomad and Nomad Enterprise versions up to 1.0.13, 1.1.7, and 1.2.0, specifically when the QEMU task driver is enabled. Authenticated users with job submission privileges could bypass configured image path restrictions, potentially leading to unauthorized code execution. This vulnerability carries a CVSS score of 8.8 (High), indicating a significant risk. It is easily exploitable over the network with low attack complexity and requires only low privileges, allowing for high impact on confidentiality, integrity, and availability. There is currently no evidence of active exploitation, and no public exploit code (Metasploit, Nuclei, ExploitDB) is available. Community discussion and media coverage for this CVE are minimal, suggesting a low level of public awareness or attention.

Impacted Technologies

VendorProductVersion(s)CPE
>= 1.0.0, < 1.0.14CPE matchmatch criteria
cpe:2.3:a:hashicorp:nomad:*:*:*:*:-:*:*:*
>= 1.0.0, < 1.0.14CPE matchmatch criteria
cpe:2.3:a:hashicorp:nomad:*:*:*:*:enterprise:*:*:*
>= 1.1.0, < 1.1.8CPE matchmatch criteria
cpe:2.3:a:hashicorp:nomad:*:*:*:*:-:*:*:*
>= 1.1.0, < 1.1.8CPE matchmatch criteria
cpe:2.3:a:hashicorp:nomad:*:*:*:*:enterprise:*:*:*
1.2.0CPE matchmatch criteria
cpe:2.3:a:hashicorp:nomad:1.2.0:-:*:*:-:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.8HIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.18%
Probability of exploitation in next 30 days
EPSS Percentile
64.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0118 is in the 61st percentile among its peer group of 17,844 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (3)

gopatch availablevia ghsa
Product: github.com/hashicorp/nomadFixed in: 1.0.14
gopatch availablevia ghsa
Product: github.com/hashicorp/nomadFixed in: 1.1.8
gopatch availablevia ghsa
Product: github.com/hashicorp/nomadFixed in: 1.2.1

Vendor Advisories (2)

goGHSA-2jhh-5xm2-j4gfhigh

Improper Authentication in HashiCorp Nomad

Dec 10, 2021
redhatCVE-2021-43415Moderate

nomad: QEMU task driver allowed paths bypass with job args

Nov 21, 2021

References

discuss.hashicorp.com / t/hcsec-2021-31-nomad-qemu-task-driver-allowed-paths-bypass-with-job-args/32288
MitigationVendor Advisory
hashicorp.com / blog/category/nomad
ProductVendor Advisory