Arbitrary Code Execution Affecting joblib package, versions [,1.1.1)



    Attack Complexity Low
    Confidentiality High
    Integrity High
    Availability High

    Threat Intelligence

    Exploit Maturity Proof of concept
    EPSS 0.33% (71st percentile)
Expand this section
9.8 critical

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications
  • Snyk ID SNYK-PYTHON-JOBLIB-3027033
  • published 25 Sep 2022
  • disclosed 19 Sep 2022
  • credit Jim Lin

How to fix?

Upgrade joblib to version 1.1.1 or higher.


joblib is a Lightweight pipelining with Python functions

Affected versions of this package are vulnerable to Arbitrary Code Execution via the pre_dispatch flag in Parallel() class due to the eval() statement.


def f():
    return 1
p = Parallel(n_jobs=3, pre_dispatch="sys.exit(0)")
p(delayed(f)() for i in range(10)) # this will cause the system to exit