CVE-2021-3283

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2021-02-01 · updated 2026-06-17

Description

HashiCorp Nomad and Nomad Enterprise up to 0.12.9 exec and java task drivers can access processes associated with other tasks on the same node. Fixed in 0.12.10, and 1.0.3.

Affected products

HashiCorp Nomad Enterprise: before 0.12.10; from 1.0.0 before 1.0.3 — fixed in 0.12.10, 1.0.3

How to fix

Upgrade to a fixed version: HashiCorp Nomad Enterprise 0.12.10, 1.0.3. Check the vendor advisory for mitigations.

References

https://discuss.hashicorp.com/t/hcsec-2021-01-nomad-s-exec-and-java-task-drivers-did-not-isolate-processes/20332
https://discuss.hashicorp.com/t/hcsec-2021-01-nomad-s-exec-and-java-task-drivers-did-not-isolate-processes/20332

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