CVE-2021-27213

CRITICAL

pystemon < 2021-02-13 - Remote Code Execution via YAML Deserialization

Title source: llm
STIX 2.1

Description

config.py in pystemon before 2021-02-13 allows code execution via YAML deserialization because SafeLoader and safe_load are not used.

References (2)

Core 2
Core References
Exploit, Third Party Advisory x_refsource_misc
https://www.huntr.dev/bounties/1-other-pystemon/

Scores

CVSS v3 9.8
EPSS 0.0261
EPSS Percentile 83.5%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Details

CWE
CWE-502
Status published
Products (1)
pystemon_project/pystemon < 2021-02-13
Published Feb 14, 2021
Tracked Since Feb 18, 2026