CVE-2021-47952

python jsonpickle 2.0.0 contains a remote code execution vulnerability that allows attackers to execute arbitrary Python commands by deserializing malicious JSON payloads containing py/repr objects. Attackers can craft JSON strings with py/repr directives that invoke the eval function during deserialization to execute arbitrary code.

CVSS v3 9.8 CRITICAL

9.8^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/jsonpickle/jsonpickle
https://jsonpickle.github.io
https://www.exploit-db.com/exploits/49585
https://www.vulncheck.com/advisories/python-jsonpickle-remote-code-execution-via-py-repr
https://access.redhat.com/security/cve/CVE-2021-47952
https://bugzilla.redhat.com/show_bug.cgi?id=2478170
https://security.access.redhat.com/data/csaf/v2/vex/2021/cve-2021-47952.json

Configurations

No configuration.

History

No history.

Information

Published : 2026-05-16 16:16

Updated : 2026-07-15 02:17

NVD link : CVE-2021-47952

Mitre link : CVE-2021-47952

CVE.ORG link : CVE-2021-47952

JSON object : View

Products Affected

No product.

CWE

CWE-94

Improper Control of Generation of Code ('Code Injection')

CWE-502

Deserialization of Untrusted Data

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