What is CVE-2020-27195?

CVE-2020-27195 is a critical-severity vulnerability in Hashicorp Nomad. CVSS score: 9.1/10. Published 2020-10-22.

How severe is CVE-2020-27195?

Critical severity. CVSS v3 base score is 9.1 out of 10.

Vulnerability in Hashicorp Nomad

CVE-2020-27195

HashiCorp Nomad and Nomad Enterprise version 0.9.0 up to 0.12.5 client file sandbox feature can be subverted using either the template or artifact stanzas. Fixed in 0.12.6, 0.11.5, and 0.10.6

Published 2020-10-22 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N.

EPSS exploit prediction

EPSS: 0.015 (73.1th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 73rd percentile — 73.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.015 · newest: 0.015 · change: 0.000

Affected products

Hashicorp Nomad

References

www.nomadproject.io/downloads (Product)
github.com/hashicorp/nomad/blob/master/CHANGELOG.md (Third Party Advisory, Release Notes)

Frequently asked questions

What is CVE-2020-27195?: CVE-2020-27195 is a critical-severity vulnerability in Hashicorp Nomad. CVSS score: 9.1/10. Published 2020-10-22.
How severe is CVE-2020-27195?: Critical severity. CVSS v3 base score is 9.1 out of 10.