CVE-2026-8052: Github.com/hashicorp/nomad driver exec2 HashiCorp Nomad’s Exec2 Task Driver Vulnerability

MODERATE
Advisory Identifier: GHSA-wqwc-x3rc-2xw6
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CVSS 6.0
CWE-59
Published
Advisory Summary

CVE-2026-8052 is a MODERATE (CVSS 6.0) hashicorp nomad’s exec2 task driver vulnerability (CWE-59: Improper Link Resolution Before File Access ('Link Following')) affecting Github.com/hashicorp/nomad driver exec2 libraries in the Go ecosystem. The issue involves hashicorp nomad’s exec2 task driver vulnerable to a symlink attack. Remediation is available by upgrading affected packages to version 0.1.2.

CVE-2026-8052 at a Glance

CVE Identifier CVE-2026-8052
GHSA Identifier GHSA-wqwc-x3rc-2xw6
Severity MODERATE
CVSS v3.1 Base Score 6.0
CWE Classification CWE-59: Improper Link Resolution Before File Access ('Link Following')
Affected Product Github.com/hashicorp/nomad driver exec2
Package Ecosystem Go
Published Date
Last Updated

Security Impact

CVSS: 6.0

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:H/A:N).

Attack Vector Local (AV:L)
Attack Complexity Low (AC:L)
Privileges Required High (PR:H)
User Interaction None (UI:N)
Scope Changed (S:C)
Confidentiality None (C:N)
Integrity High (I:H)
Availability None (A:N)

How to Fix CVE-2026-8052

To remediate this vulnerability, upgrade all affected Github.com/hashicorp/nomad driver exec2 dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

github.com/hashicorp/nomad-driver-exec2 fixed: 0.1.2 
Upgrade github.com/hashicorp/nomad-driver-exec2 to 0.1.2
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

inspect dependencies for github.com/hashicorp/nomad-driver-exec2

How to Check if You Are Affected

To determine whether your application is affected by CVE-2026-8052, inspect your project dependencies for Github.com/hashicorp/nomad driver exec2:

inspect dependencies for github.com/hashicorp/nomad-driver-exec2

Analyze the terminal output to locate any version of Github.com/hashicorp/nomad driver exec2 in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 0.1.2), your application is affected.

Note: Verify declared build manifests and deployed runtime container environments.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-59: Improper Link Resolution Before File Access ('Link Following'), where the product attempts to access a file based on the filename, but it does not properly prevent that filename from identifying a link or shortcut that resolves to an unintended resource. In Github.com/hashicorp/nomad driver exec2, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

HashiCorp Nomad’s exec2 task driver prior to 0.1.2 is vulnerable to arbitrary file read and write on the client host as the Nomad process user through a symlink attack. This vulnerability (CVE-2026-8052) is fixed in version 0.1.2 of the exec2 task driver.

CVE-2026-8052 Affected Github.com/hashicorp/nomad driver exec2 Versions

1 component(s)
Fixed Versions:
0.1.2
Product / Package Ecosystem Affected Versions Fixed Version
github.com/hashicorp/nomad-driver-exec2
golang/github.com/hashicorp/nomad-driver-exec2
Go
< 0.1.2
0.1.2

References

NVD — CVE-2026-8052 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-8052
discuss.hashicorp.com/t/hcsec-2026-13-nom... WEB
https://discuss.hashicorp.com/t/hcsec-2026-13-nomads-exec2-task-driver-vulnerable-to-arbitrary-file-read-write-on-client-host-through-symlink-attack/77415
Github.com/hashicorp/nomad driver exec2 Source Repository REPOSITORY
https://github.com/hashicorp/nomad-driver-exec2
Github.com/hashicorp/nomad driver exec2 Release RELEASE
https://github.com/hashicorp/nomad-driver-exec2/releases/tag/v0.1.2

Frequently Asked Questions

What is CVE-2026-8052?
CVE-2026-8052 is a security vulnerability in Github.com/hashicorp/nomad driver exec2 involving HashiCorp Nomad’s exec2 task driver vulnerable to a symlink attack under CWE-59: Improper Link Resolution Before File Access ('Link Following').
Which Github.com/hashicorp/nomad driver exec2 versions are affected?
Affected versions include releases prior to 0.1.2 across affected packages: github.com/hashicorp/nomad-driver-exec2.
What version fixes CVE-2026-8052?
Upgrading to 0.1.2 (or the latest patched release for your respective branch) resolves the vulnerability.
Is github.com/hashicorp/nomad-driver-exec2 affected?
Yes, github.com/hashicorp/nomad-driver-exec2 is affected in releases prior to 0.1.2. Upgrade your dependency to 0.1.2 or later.
What is the CVSS score of CVE-2026-8052?
CVE-2026-8052 has a CVSS v3.1 base score of 6.0 (MODERATE) with vector string CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:H/A:N.
What CWE is associated with CVE-2026-8052?
CVE-2026-8052 is classified under CWE-59: Improper Link Resolution Before File Access ('Link Following') (The product attempts to access a file based on the filename, but it does not properly prevent that filename from identifying a link or shortcut that resolves to an unintended resource.).
How can I check Go dependencies for CVE-2026-8052?
Run the dependency tree command: 'inspect dependencies for github.com/hashicorp/nomad-driver-exec2'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-wqwc-x3rc-2xw6",
  "modified" : "2026-05-19T15:39:35Z",
  "published" : "2026-05-12T21:31:35Z",
  "aliases" : [ "CVE-2026-8052" ],
  "summary" : "HashiCorp Nomad’s exec2 task driver vulnerable to a symlink attack",
  "details" : "HashiCorp Nomad’s exec2 task driver prior to 0.1.2 is vulnerable to arbitrary file read and write on the client host as the Nomad process user through a symlink attack. This vulnerability (CVE-2026-8052) is fixed in version 0.1.2 of the exec2 task driver.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:H/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Go",
      "name" : "github.com/hashicorp/nomad-driver-exec2"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "0.1.2"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-8052"
  }, {
    "type" : "WEB",
    "url" : "https://discuss.hashicorp.com/t/hcsec-2026-13-nomads-exec2-task-driver-vulnerable-to-arbitrary-file-read-write-on-client-host-through-symlink-attack/77415"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/hashicorp/nomad-driver-exec2"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/hashicorp/nomad-driver-exec2/releases/tag/v0.1.2"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-59" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-05-19T15:39:35Z",
    "nvd_published_at" : "2026-05-12T20:16:46Z"
  }
}