CVE-2020-22083
9.8
CRITICAL · CVSS 3.1 · EPSS 6.4% (pctl 94)
In your normal cycle
Critical by CVSS (9.8), but no sign of active exploitation.
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
Scoring
| CVSS | 9.8 (CRITICAL, v3.1) |
|---|---|
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| EPSS | 6.42% — more likely to be exploited than 94% of all CVEs |
| Weakness | CWE-502 |
| On CISA KEV | no |
| Public exploit | none known |
| Published | 2020-12-17 |
| Last modified | 2026-06-17 |
Affected (1)
| Vendor | Product |
|---|---|
| jsonpickle project | jsonpickle |
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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