What’s Vulnerable › Vulnerabilities

CVE-2020-22083

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 6.5% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2020-12-17 · updated 2026-06-17
• Weakness: CWE-502

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

Affected products

• Jsonpickle Project Jsonpickle: through 1.4.1

References

• https://access.redhat.com/security/cve/CVE-2020-22083
• https://gist.github.com/j0lt-github/bb543e77a1a10c33cb56cf23d0837874
• https://github.com/j0lt-github/python-deserialization-attack-payload-generator
• https://github.com/jsonpickle/jsonpickle/issues/332
• https://github.com/jsonpickle/jsonpickle/issues/332#issuecomment-747807494
• https://versprite.com/blog/application-security/into-the-jar-jsonpickle-exploitation/
• https://access.redhat.com/security/cve/CVE-2020-22083
• https://gist.github.com/j0lt-github/bb543e77a1a10c33cb56cf23d0837874
• https://github.com/j0lt-github/python-deserialization-attack-payload-generator
• https://github.com/jsonpickle/jsonpickle/issues/332
• https://github.com/jsonpickle/jsonpickle/issues/332#issuecomment-747807494
• https://versprite.com/blog/application-security/into-the-jar-jsonpickle-exploitation/

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