CVE-2021-4041

Name: CVE-2021-4041
Creator: NVD / NIST
Published: 2022-08-24T16:15:09.37+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.8/10EPSS 0.31%

Last modified Jun 17, 2026

CVE-2021-4041 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. A flaw was found in ansible-runner. An improper escaping of the shell command, while calling the ansible_runner.interface.run_command, can lead to parameters getting executed as host's shell command. EPSS estimates a 0.31% chance of exploitation in the next 30 days.

Description

A flaw was found in ansible-runner. An improper escaping of the shell command, while calling the ansible_runner.interface.run_command, can lead to parameters getting executed as host's shell command. A developer could unintentionally write code that gets executed in the host rather than the virtual environment.

Metrics

CVSS 3.1

7.8/10

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

EPSS Probability

0.31%

22.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions	Update
Redhat	Ansible Runner	< 2.1.0	—
Redhat	Ansible Runner	2.1.0	Alpha1

References

https://access.redhat.com/security/cve/CVE-2021-4041Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2028074Issue Tracking, Patch, Vendor Advisory
https://github.com/ansible/ansible-runner/commit/3533f265f4349a3f2a0283158cd01b59a6bbc7bdPatch, Third Party Advisory
https://access.redhat.com/security/cve/CVE-2021-4041Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2028074Issue Tracking, Patch, Vendor Advisory
https://github.com/ansible/ansible-runner/commit/3533f265f4349a3f2a0283158cd01b59a6bbc7bdPatch, Third Party Advisory

Timeline

Published: Aug 24, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-4041?

How severe is CVE-2021-4041?

CVE-2021-4041 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.31% probability of exploitation in the next 30 days.

How do I fix CVE-2021-4041?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-4041?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST