Security Bulletin
Summary
HashiCorp Nomad and Nomad Enterprise prior to 2.0.1 are vulnerable to code execution on the client host through a path traversal attack. This vulnerability (CVE-2026-7474) is fixed in Nomad 2.0.1, 1.11.5 and 1.10.11.
Vulnerability Details
CVEID: CVE-2026-7474
DESCRIPTION: A user with host-volume-create and read access to nodes can submit a host-volume create request that specifies a target node identifier and plugin identifier that traverses out of the plugin directory and executes a non-plugin executable as the same user as the Nomad agent.
CWE: CWE-22: Improper Limitation of a Pathname to a Restricted Directory (Path Traversal)
CVSS Source: HashiCorp Inc.
CVSS Base score: 8.8
CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)
Affected Products and Versions
| Affected Product(s) | Version(s) |
| Nomad Community Edition | affected from 1.10.0 up to 2.0.1 |
| Nomad Enterprise | affected from 1.10.0 up to 2.0.1, unaffected from 1.10.11, 1.11.5 |
Remediation/Fixes
Customers should evaluate the risk associated with this issue and consider upgrading to Nomad Community Edition 2.0.1 or Nomad Enterprise 2.0.1, 1.11.5, or 1.10.11.
Nomad Enterprise customers that are unable to upgrade can implement a Sentinel policy to disable external plugins. The following policy disables any plugin_id except the built-in mkdir:
{noformat}# policy.hcl
is_allowed_plugin = func() {
print("only mkdir plugins allowed")
return volume.plugin_id == "mkdir"
}
main = rule { is_allowed_plugin() }{noformat}
This policy can be applied to Nomad Enterprise clusters with: nomad sentinel apply -level hard-mandatory -scope=submit-host-volume mkdironly ./policy.hcl.
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References
Acknowledgement
This issue was reported to HashiCorp by Adrian Denkiewicz at Doyensec in collaboration with Claude and Anthropic Research
Change History
12 May 2026: Initial Publication
*The CVSS Environment Score is customer environment specific and will ultimately impact the Overall CVSS Score. Customers can evaluate the impact of this vulnerability in their environments by accessing the links in the Reference section of this Security Bulletin.
Disclaimer
According to the Forum of Incident Response and Security Teams (FIRST), the Common Vulnerability Scoring System (CVSS) is an "industry open standard designed to convey vulnerability severity and help to determine urgency and priority of response." IBM PROVIDES THE CVSS SCORES ""AS IS"" WITHOUT WARRANTY OF ANY KIND, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. CUSTOMERS ARE RESPONSIBLE FOR ASSESSING THE IMPACT OF ANY ACTUAL OR POTENTIAL SECURITY VULNERABILITY. In addition to other efforts to address potential vulnerabilities, IBM periodically updates the record of components contained in our product offerings. As part of that effort, if IBM identifies previously unidentified packages in a product/service inventory, we address relevant vulnerabilities regardless of CVE date. Inclusion of an older CVEID does not demonstrate that the referenced product has been used by IBM since that date, nor that IBM was aware of a vulnerability as of that date. We are making clients aware of relevant vulnerabilities as we become aware of them. "Affected Products and Versions" referenced in IBM Security Bulletins are intended to be only products and versions that are supported by IBM and have not passed their end-of-support or warranty date. Thus, failure to reference unsupported or extended-support products and versions in this Security Bulletin does not constitute a determination by IBM that they are unaffected by the vulnerability. Reference to one or more unsupported versions in this Security Bulletin shall not create an obligation for IBM to provide fixes for any unsupported or extended-support products or versions.
Document Location
Worldwide
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Document Information
Modified date:
12 May 2026
Initial Publish date:
12 May 2026
UID
ibm17272746