HIGH

CVE-2021-44657

CVSS v3

8.8

HIGH

EPSS Score

2.6 %

exploit probability, as of 2026-10-19

CISA KEV

known exploited

Exploitation

—

SSVC status

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Affected and fixed versions

Neither OSV.dev nor the vendor advisories we read list affected versions for CVE-2021-44657 yet.

Full record on NVD

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.

Technical details

Published: 2021-12-15

Frequently asked questions

What is CVE-2021-44657?

Is CVE-2021-44657 actively exploited?

Active exploitation of CVE-2021-44657 has not been confirmed. Its EPSS score was 2.6% on 2026-10-19, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2021-44657?

CVE-2021-44657 has a CVSS v3 base score of 8.8 (HIGH severity).

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