jsonpickle through 1.4.1 allows remote code execution during deserialization of a…
Priority MEDIUM 52CWE-502Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub. Impact type from CWE-502.
Summary
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
Why it matters now
EPSS 0.06619 93rd percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
| — | jsonpickle (PyPI) | up to 1.4.2 | — | No fix listed | GHSA-j66q-qmrc-89rx |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
- jsonpickle (PyPI) Vendor— Affected up to 1.4.2 Fixed in — No fix listed GHSA-j66q-qmrc-89rx
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:jsonpickle_project:jsonpickle:*:*:*:*:*:*:*:* | up to 1.4.1 | Vulnerable | Jsonpickle Project |
- cpe:2.3:a:jsonpickle_project:jsonpickle:*:*:*:*:*:*:*:* Versions up to 1.4.1 Vulnerable ·Jsonpickle Project
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Timeline
- 2026-10-02 Threatist record created from CVE-2020-22083
- 2026-10-03 Alias added: GHSA-j66q-qmrc-89rx
References
Advisory 6
- https://github.com/j0lt-github/python-deserialization-attack-payload-generator
- https://github.com/jsonpickle/jsonpickle/issues/332
- https://gist.github.com/j0lt-github/bb543e77a1a10c33cb56cf23d0837874
- https://github.com/jsonpickle/jsonpickle/issues/332#issuecomment-747807494
- https://access.redhat.com/security/cve/CVE-2020-22083
- https://nvd.nist.gov/vuln/detail/CVE-2020-22083
Sources
- CVE-2020-22083 · CVE Program
- CVE-2020-22083 · NVD
- FIRST EPSS
- GHSA-j66q-qmrc-89rx · GitHub Advisory Database · CC BY 4.0
- CVE-2020-22083 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences