CVE-2021-47952

critical

Published 2026-05-16 · Modified 2026-05-26

CVSS v3

9.8

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

CVSS v2

—

VIR risk

9.8

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.

Predictions

Exploit likelihood

97%

Patch ETA

—

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

vendor Authored 2026-05-27

Vendor advisory: suse — https://www.suse.com/security/cve/CVE-2021-47952.html

OS impact

OS	Version	Status	Fixed in
sles		affected

References

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://www.suse.com/security/cve/CVE-2021-47952.html

CWEs

CWE-94

Verify integrity in audit chain (admin only). AS-IS.