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 system commands and arbitrary code.

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History

Tue, 19 May 2026 00:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-502
References
Metrics threat_severity

None

threat_severity

Critical


Mon, 18 May 2026 17:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Sun, 17 May 2026 18:00:00 +0000

Type Values Removed Values Added
First Time appeared Jsonpickle Project
Jsonpickle Project jsonpickle
Vendors & Products Jsonpickle Project
Jsonpickle Project jsonpickle

Sat, 16 May 2026 15:45:00 +0000

Type Values Removed Values Added
Description 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 system commands and arbitrary code.
Title python jsonpickle 2.0.0 Remote Code Execution via py/repr
Weaknesses CWE-94
References
Metrics cvssV3_1

{'score': 9.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}

cvssV4_0

{'score': 9.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}


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cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-05-18T17:01:06.050Z

Reserved: 2026-02-01T11:24:18.719Z

Link: CVE-2021-47952

cve-icon Vulnrichment

Updated: 2026-05-18T17:00:50.531Z

cve-icon NVD

Status : Deferred

Published: 2026-05-16T16:16:21.520

Modified: 2026-05-18T20:16:36.607

Link: CVE-2021-47952

cve-icon Redhat

Severity : Critical

Publid Date: 2026-05-16T15:26:06Z

Links: CVE-2021-47952 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-05-19T02:00:14Z

Weaknesses