CVE-2021-44657

HighCVSS 8.8/10Last modified Jun 17, 2026

Description

In StackStorm versions prior to 3.6.0, the jinja interpreter was not run in sandbox mode and thus allows execution of unsafe system commands. Jinja does not enable sandboxed mode by default due to backwards compatibility. Stackstorm now sets sandboxed mode for jinja by default.

Metrics

CVSS 3.1 8.8/10CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected software

Vendor	Product	Versions
n/a	n/a	n/a

References

https://github.com/StackStorm/st2/pull/5359Patch, Third Party Advisory
https://github.com/pallets/jinja/issues/549Exploit, Issue Tracking, Third Party Advisory
https://podalirius.net/en/articles/python-vulnerabilities-code-execution-in-jinja-templates/Exploit, Third Party Advisory
https://stackstorm.com/2021/12/16/stackstorm-v3-6-0-released/Release Notes, Vendor Advisory
https://github.com/StackStorm/st2/pull/5359Patch, Third Party Advisory
https://github.com/pallets/jinja/issues/549Exploit, Issue Tracking, Third Party Advisory
https://podalirius.net/en/articles/python-vulnerabilities-code-execution-in-jinja-templates/Exploit, Third Party Advisory
https://stackstorm.com/2021/12/16/stackstorm-v3-6-0-released/Release Notes, Vendor Advisory

Timeline

Published: Dec 15, 2021
Last modified: Jun 17, 2026
NVD status: Modified

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