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CRITICAL

CVE-2020-22083

CVSS v3

9.8

CRITICAL

EPSS Score

6.5 %

exploit probability, as of 2026-10-19

CISA KEV

No

known exploited

Exploitation

—

SSVC status

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Affected and fixed versions

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • jsonpicklePyPIall versions · fixed in 1.4.2

Vendor advisories

  • CVE-2020-22083 Red Hat Product Security

    python-jsonpickle: deserialization of a malicious payload in the decode function can lead to RCE

Full record on NVD

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

Technical details

Published
2020-12-17

Frequently asked questions

What is CVE-2020-22083?

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

Is CVE-2020-22083 actively exploited?

Active exploitation of CVE-2020-22083 has not been confirmed. Its EPSS score was 6.5% on 2026-10-19, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2020-22083?

CVE-2020-22083 has a CVSS v3 base score of 9.8 (CRITICAL severity).

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