Nomad's exec2 task driver vulnerable to arbitrary file read/write on client host through symlink attack

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Summary

CVECVE-2026-8052
StatePUBLISHED
AssignerHashiCorp
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-05-12 20:16:46 UTC
Updated2026-05-12 20:16:46 UTC
DescriptionHashiCorp 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.

Risk And Classification

Primary CVSS: v3.1 6 MEDIUM from [email protected]

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

Problem Types: CWE-59 | CWE-59 CWE-59: Improper Link Resolution Before File Access (Link Following)

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary6MEDIUMCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:H/A:N
3.1CNACVSS6MEDIUMCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:H/A:N

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
High
User Interaction
None
Scope
Changed
Confidentiality
None
Integrity
High
Availability
None

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA HashiCorp Shared Library affected 0.1.0 0.1.2 semver 64 bit, 32 bit, x86, ARM, MacOS, Windows, Linux

References

ReferenceSourceLinkTags
discuss.hashicorp.com/t/hcsec-2026-13-nomads-exec2-task-driver-vulnerable-to-arbitr... [email protected] discuss.hashicorp.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: This issue was identified by the Nomad engineering team in conjunction with Alex Manson (Aiven / NeuroWinter). (en)

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