CVE-2020-22083

Name: CVE-2020-22083
Creator: NVD / NIST
Published: 2020-12-17T16:15:12.61+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 6.10%

Last modified Jun 17, 2026

CVE-2020-22083 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. jsonpickle through 1.4.1 allows remote code execution during deserialization of a malicious payload through the decode() function. Note: It has been argued that this is expected and clearly documented behaviour. EPSS estimates a 6.10% chance of exploitation in the next 30 days.

Description

jsonpickle through 1.4.1 allows remote code execution during deserialization of a malicious payload through the decode() function. Note: It has been argued that this is expected and clearly documented behaviour. pickle is known to be capable of causing arbitrary code execution, and must not be used with un-trusted data

Metrics

CVSS 3.1

9.8/10

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

EPSS Probability

6.10%

92.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-502

Affected Software

Vendor	Product	Versions
Jsonpickle Project	Jsonpickle	<= 1.4.1

References

https://access.redhat.com/security/cve/CVE-2020-22083Third Party Advisory
https://gist.github.com/j0lt-github/bb543e77a1a10c33cb56cf23d0837874Third Party Advisory
https://github.com/j0lt-github/python-deserialization-attack-payload-generatorThird Party Advisory
https://github.com/jsonpickle/jsonpickle/issues/332Third Party Advisory
https://github.com/jsonpickle/jsonpickle/issues/332#issuecomment-747807494Third Party Advisory
https://versprite.com/blog/application-security/into-the-jar-jsonpickle-exploitation/Exploit, Third Party Advisory
https://access.redhat.com/security/cve/CVE-2020-22083Third Party Advisory
https://gist.github.com/j0lt-github/bb543e77a1a10c33cb56cf23d0837874Third Party Advisory
https://github.com/j0lt-github/python-deserialization-attack-payload-generatorThird Party Advisory
https://github.com/jsonpickle/jsonpickle/issues/332Third Party Advisory
https://github.com/jsonpickle/jsonpickle/issues/332#issuecomment-747807494Third Party Advisory
https://versprite.com/blog/application-security/into-the-jar-jsonpickle-exploitation/Exploit, Third Party Advisory

Timeline

Published: Dec 17, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-22083?

How severe is CVE-2020-22083?

CVE-2020-22083 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 6.10% probability of exploitation in the next 30 days.

How do I fix CVE-2020-22083?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-22083?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST