** DISPUTED ** 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 cle
** DISPUTED ** 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 software
Click a technology to see all vulnerabilities affecting it.
| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Python (PyPI) | jsonpickle | < 1.4.2 | 1.4.2 |
References
- https://nvd.nist.gov/vuln/detail/CVE-2020-22083
- https://github.com/jsonpickle/jsonpickle/issues/332
- https://github.com/jsonpickle/jsonpickle/issues/332#issuecomment-747807494
- https://github.com/jsonpickle/jsonpickle/issues/335
- 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
- https://github.com/pypa/advisory-database/tree/main/vulns/jsonpickle/PYSEC-2020-49.yaml
- https://versprite.com/blog/application-security/into-the-jar-jsonpickle-exploitation
- https://versprite.com/blog/application-security/into-the-jar-jsonpickle-exploitation/
- https://github.com/advisories/GHSA-j66q-qmrc-89rx
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H- Weakness (CWE)
CWE-502- Platform
- Python (PyPI)
- Package
jsonpickle- Disclosed
- 17.12.2020
- Updated
- 11.10.2026 12:20
Sources and licenses
OSV / GitHub Advisory Database - GHSA-j66q-qmrc-89rx - CC BY 4.0
OSV / GitHub Advisory Database - PYSEC-2020-49 - PyPA Advisory Database; CC BY 4.0
Vulnerability history: jsonpickle
All published vulnerabilities of this package (Python (PyPI)), newest first. Shows whether this is a one-off slip or a package that needs watching.
This is the only known vulnerability of this package.
Know which vulnerabilities affect your application
With the DockRay integration and software inventory enabled, DockRay checks reported component versions against known vulnerabilities and notifies you about confirmed matches. Coverage depends on the supported technology and available advisory data.