blob: 1e32b3c47b7e7e6dc22f04445de2552de874d12f [file] [log] [blame]
From: Tina Müller <>
Subject: [ANN] PyYAML-5.3.1: YAML parser and emitter for Python
Announcing PyYAML-5.3.1
A new release of PyYAML is now available:
This release contains a security fix for CVE-2020-1747. FullLoader was still
exploitable for arbitrary command execution.
Thanks to Riccardo Schirone ( for both reporting
this and providing the fixes to resolve it.
* -- Prevents arbitrary code execution during python/object/new constructor
PyYAML IRC Channel: #pyyaml on
PyYAML homepage:
PyYAML documentation:
Source and binary installers:
GitHub repository:
Bug tracking:
YAML homepage:
YAML-core mailing list:
About PyYAML
YAML is a data serialization format designed for human readability and
interaction with scripting languages. PyYAML is a YAML parser and emitter for
PyYAML features a complete YAML 1.1 parser, Unicode support, pickle support,
capable extension API, and sensible error messages. PyYAML supports standard
YAML tags and provides Python-specific tags that allow to represent an
arbitrary Python object.
PyYAML is applicable for a broad range of tasks from complex configuration
files to object serialization and persistence.
>>> import yaml
>>> yaml.full_load("""
... name: PyYAML
... description: YAML parser and emitter for Python
... homepage:
... keywords: [YAML, serialization, configuration, persistence, pickle]
... """)
{'keywords': ['YAML', 'serialization', 'configuration', 'persistence',
'pickle'], 'homepage': '', 'description':
'YAML parser and emitter for Python', 'name': 'PyYAML'}
>>> print(yaml.dump(_))
name: PyYAML
description: YAML parser and emitter for Python
keywords: [YAML, serialization, configuration, persistence, pickle]
The following people are currently responsible for maintaining PyYAML:
* Ingy döt Net
* Matt Davis
and many thanks to all who have contribributed!
Copyright (c) 2017-2020 Ingy döt Net <>
Copyright (c) 2006-2016 Kirill Simonov <>
The PyYAML module was written by Kirill Simonov <>.
It is currently maintained by the YAML and Python communities.
PyYAML is released under the MIT license.
See the file LICENSE for more details.