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CVE-2021-47952

CRITICAL Exploitation: PoC
9.8
CVSS 3.1
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 arbitrary code.

Metadata

CVE ID
CVE-2021-47952
State
PUBLISHED
Assigner
VulnCheck
Reserved
2026-02-01 11:24 UTC
Published
2026-05-16 15:26 UTC
Last updated
2026-07-28 01:47 UTC
Primary CWE
CWE-94
Improper Control of Generation of Code ('Code Injection')
Vendor / Product
Jsonpickle / python jsonpickle
Sources
cve.org  ·  NVD

Severity & Metrics

9.8 CRITICAL CVSS 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC — CISA Coordinator
Exploitation
PoC
Automatable
yes
Tech. Impact
total
Affected products (1)
VendorProductPlatformVersions
Jsonpickle python jsonpickle — 2.0.0
Weakness (CWE)
CWESourceDescription
CWE-94 cna Improper Control of Generation of Code ('Code Injection')
CWE-502 adp Deserialization of Untrusted Data
CVSS scores (3)
ScoreSeverityVersionSourceVector
9.8 CRITICAL 3.1 cna CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.8 CRITICAL 3.1 adp CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.3 CRITICAL 4.0 cna 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
References (4)
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