CVE-2022-21797: Arbitrary Code Execution

Severity: critical (CVSS 9.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.6% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2022-09-26 · updated 2026-06-17
Weakness: CWE-94

Description

The package joblib from 0 and before 1.2.0 are vulnerable to Arbitrary Code Execution via the pre_dispatch flag in Parallel() class due to the eval() statement.

Affected products

Debian Linux: 10.0
Fedoraproject Fedora: 36, 37
Joblib Project Joblib: before 1.1.1 — fixed in 1.1.1

How to fix

Upgrade to a fixed version: Joblib Project Joblib 1.1.1. Check the vendor advisory for mitigations.

References

https://github.com/joblib/joblib/commit/b90f10efeb670a2cc877fb88ebb3f2019189e059
https://github.com/joblib/joblib/issues/1128
https://github.com/joblib/joblib/pull/1321
https://lists.debian.org/debian-lts-announce/2022/11/msg00020.html
https://lists.debian.org/debian-lts-announce/2023/03/msg00027.html
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BVOMMW37OXZWU2EV5ONAAS462IQEHZOF/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MJ5XTJS6OKJRRVXWFN5J67K3BYPEOBDF/
https://security.gentoo.org/glsa/202401-01
https://security.snyk.io/vuln/SNYK-PYTHON-JOBLIB-3027033
https://github.com/joblib/joblib/commit/b90f10efeb670a2cc877fb88ebb3f2019189e059
https://github.com/joblib/joblib/issues/1128
https://github.com/joblib/joblib/pull/1321

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