What is CVE-2021-27020?

CVE-2021-27020 is a high-severity vulnerability in Puppet Enterprise, classified under Improper Neutralization of Formula Elements in a CSV File. CVSS score: 8.8/10. Published 2021-08-30.

How severe is CVE-2021-27020?

High severity. CVSS v3 base score is 8.8 out of 10.

Vulnerability in Puppet Enterprise

CVE-2021-27020

Puppet Enterprise presented a security risk by not sanitizing user input when doing a CSV export.

Published 2021-08-30 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.011 (64.0th percentile), scored 2026-10-20.

Low probability of exploitation in the next 30 days, but still tracked. 64th percentile — 64.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.011 · newest: 0.011 · change: -0.000

Affected products

Puppet Enterprise
Puppet Enterprise — versions Puppet Enterprise prior to 2019.8.6

Weakness classification (CWE)

CWE-1236 — Improper Neutralization of Formula Elements in a CSV File

References

puppet.com/security/cve/CVE-2021-27020 (Vendor Advisory)

Frequently asked questions

What is CVE-2021-27020?: CVE-2021-27020 is a high-severity vulnerability in Puppet Enterprise, classified under Improper Neutralization of Formula Elements in a CSV File. CVSS score: 8.8/10. Published 2021-08-30.
How severe is CVE-2021-27020?: High severity. CVSS v3 base score is 8.8 out of 10.