Vulnerability-Lookup

ubuntu-cve-2021-47952

Vulnerability from osv_ubuntu

Published

2026-05-16 16:16

Modified

2026-06-29 10:59

Summary

Details

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.

Severity

9.8 (Critical)


                    
                      CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

9.8 (Critical)


                    
                      CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

9.3 (Critical)


                    
                      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

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2021-47952	REPORT
	https://www.cve.org/CVERecord?id=CVE-2021-47952	REPORT
	https://github.com/jsonpickle/jsonpickle	REPORT
	https://jsonpickle.github.io	REPORT
	https://www.exploit-db.com/exploits/49585	REPORT
	https://www.vulncheck.com/advisories/python-jsonp…	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "python-jsonpickle",
            "binary_version": "0.9.2-1"
          },
          {
            "binary_name": "python3-jsonpickle",
            "binary_version": "0.9.2-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:16.04:LTS",
        "name": "jsonpickle",
        "purl": "pkg:deb/ubuntu/jsonpickle@0.9.2-1?arch=source\u0026distro=xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.8.0-1build1",
        "0.9.2-1"
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    },
    {
      "ecosystem_specific": {
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            "binary_name": "python-jsonpickle",
            "binary_version": "0.9.5-1"
          },
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            "binary_name": "python3-jsonpickle",
            "binary_version": "0.9.5-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "jsonpickle",
        "purl": "pkg:deb/ubuntu/jsonpickle@0.9.5-1?arch=source\u0026distro=bionic"
      },
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          "events": [
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      "versions": [
        "0.9.5-0ubuntu1",
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    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "python3-jsonpickle",
            "binary_version": "1.2-1"
          }
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      },
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "jsonpickle",
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      },
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        {
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      ],
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    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "python3-jsonpickle",
            "binary_version": "2.0.0+dfsg1-1"
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      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
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        "purl": "pkg:deb/ubuntu/jsonpickle@2.0.0+dfsg1-1?arch=source\u0026distro=jammy"
      },
      "ranges": [
        {
          "events": [
            {
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            }
          ],
          "type": "ECOSYSTEM"
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      ],
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        "2.0.0+dfsg1-1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "python3-jsonpickle",
            "binary_version": "3.0.3+dfsg-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:24.04:LTS",
        "name": "jsonpickle",
        "purl": "pkg:deb/ubuntu/jsonpickle@3.0.3+dfsg-1?arch=source\u0026distro=noble"
      },
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        {
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              "introduced": "0"
            }
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      "versions": [
        "3.0.0+dfsg1-1",
        "3.0.2+dfsg-1",
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    },
    {
      "ecosystem_specific": {
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          {
            "binary_name": "python3-jsonpickle",
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      },
      "package": {
        "ecosystem": "Ubuntu:25.10",
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        "purl": "pkg:deb/ubuntu/jsonpickle@4.0.2+dfsg-2?arch=source\u0026distro=questing"
      },
      "ranges": [
        {
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          ],
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    {
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  ],
  "aliases": [],
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  "id": "UBUNTU-CVE-2021-47952",
  "modified": "2026-06-29T10:59:52Z",
  "published": "2026-05-16T16:16:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2021-47952"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2021-47952"
    },
    {
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      "url": "https://github.com/jsonpickle/jsonpickle"
    },
    {
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      "url": "https://jsonpickle.github.io"
    },
    {
      "type": "REPORT",
      "url": "https://www.exploit-db.com/exploits/49585"
    },
    {
      "type": "REPORT",
      "url": "https://www.vulncheck.com/advisories/python-jsonpickle-remote-code-execution-via-py-repr"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
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      "score": "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",
      "type": "CVSS_V4"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2021-47952"
  ]
}

CVE-2021-47952 (GCVE-0-2021-47952)

Vulnerability from cvelistv5 – Published: 2026-05-16 15:26 – Updated: 2026-07-15 11:47

Title

python jsonpickle 2.0.0 Remote Code Execution via py/repr

Summary

Severity

9.3 (Critical)


                        
                          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

9.8 (Critical)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

SSVC

Exploitation: poc Automatable: yes Technical Impact: total

CISA Coordinator (v2.0.3)

CWE

CWE-94 - Improper Control of Generation of Code ('Code Injection')
CWE-502 - Deserialization of Untrusted Data

Assigner

VulnCheck

References

7 references

URL	Tags
https://www.exploit-db.com/exploits/49585	exploit
https://jsonpickle.github.io	product
https://github.com/jsonpickle/jsonpickle	product
https://www.vulncheck.com/advisories/python-jsonp…	third-party-advisory
https://access.redhat.com/security/cve/CVE-2021-47952	vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2478170	issue-trackingx_refsource_REDHAT
https://security.access.redhat.com/data/csaf/v2/v…	x_sadp-csaf-vex

Impacted products

2 products

Vendor	Product	Version
Jsonpickle	python jsonpickle	Affected: 2.0.0
Red Hat	Red Hat Ansible Automation Platform 2	cpe:/a:redhat:ansible_automation_platform:2

Date Public

2021-02-24 00:00

Credits

Adi Malyanker, Shay Reuven

Show details on NVD website

JSON

To clipboard

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Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

ubuntu-cve-2021-47952

Vulnerability from osv_ubuntu

CVE-2021-47952 (GCVE-0-2021-47952)

Tags

Sightings

Nomenclature