CVE-2021-4041

Severity: high (CVSS 7.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2022-08-24 · updated 2026-06-17
Weakness: CWE-20

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.

Affected products

ansible-runner: before 2.1.0; 2.1.0-alpha1, 2.1.0-alpha2, 2.1.0-beta1 — fixed in 2.1.0

How to fix

Upgrade to a fixed version: ansible-runner 2.1.0. Check the vendor advisory for mitigations.

References

https://access.redhat.com/security/cve/CVE-2021-4041
https://bugzilla.redhat.com/show_bug.cgi?id=2028074
https://github.com/ansible/ansible-runner/commit/3533f265f4349a3f2a0283158cd01b59a6bbc7bd
https://access.redhat.com/security/cve/CVE-2021-4041
https://bugzilla.redhat.com/show_bug.cgi?id=2028074
https://github.com/ansible/ansible-runner/commit/3533f265f4349a3f2a0283158cd01b59a6bbc7bd

Get alerted when CVE-2021-4041 or the next vulnerability affects your stack