Lucene search
K
Catalog
Vendors
Products
Timeline
Vulnerabilities
Sources
Documentation
Blog
Glossary
FAQ
Brand assets
Assessment
Agents dashboard
Agent Scanning
API Scanning
Assessment API
Alerts
Email notifications
Webhook notifications
Alerts API
SBOM package analysis
API Reference
Support
Settings
Sign in

CVE-2020-1747

🗓️ 24 Mar 2020 13:56:37Reported by redhatType 
cve
 cve🔗 web.nvd.nist.gov📰️ 7 Media mentions👁 404 Views

Vulnerability in PyYAML library allows arbitrary code execution via untrusted YAML files

Related
Detection
Affected
Refs
Social
ReporterTitlePublishedViews
Family
ALT Linux		Security fix for the ALT Linux 9 package python-module-yaml version 5.4.1-alt0.p9
22 Mar 202100:00
–altlinux
IBM Security Bulletins		Security Bulletin: Critical Vulnerabilities in libraries used by libraries that IBM Spectrum discover is using (libraries of libraries)
28 Mar 202216:33
–ibm
IBM Security Bulletins		Security Bulletin: IBM Cloud Pak for Security includes components with multiple known vulnerabilities
12 Jan 202317:19
–ibm
IBM Security Bulletins		Security Bulletin: Vulnerability in PyYAML affects IBM Spectrum Protect Plus Container and Microsoft File Systems Agents (CVE-2020-1747)
4 Dec 202006:02
–ibm
IBM Security Bulletins		Security Bulletin: Multiple Vulnerabilities in IBM Concert Software.
18 Aug 202504:31
–ibm
IBM Security Bulletins		Security Bulletin: IBM Cognos Analytics has addressed multiple vulnerabilities
9 Oct 202020:01
–ibm
GithubExploit		Exploit for Deserialization of Untrusted Data in Pyyaml
29 Aug 202510:27
–githubexploit
FreeBSD		py-yaml -- FullLoader (still) exploitable for arbitrary command execution
2 Mar 202000:00
–freebsd
ATTACKERKB		CVE-2020-14343
9 Feb 202100:00
–attackerkb
Tenable Nessus		Alibaba Cloud Linux 3 : 0269: PyYAML (ALINUX3-SA-2024:0269)
14 May 202500:00
–nessus
Rows per page
[
  {
    "product": "PyYAML",
    "vendor": "Red Hat",
    "versions": [
      {
        "status": "affected",
        "version": "5.3.1"
      }
    ]
  }
]
SourceLink
listswww.lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WORRFHPQVAFKKXXWLSSW6XKUYLWM6CSH/
bugzillawww.bugzilla.redhat.com/show_bug.cgi
oraclewww.oracle.com/security-alerts/cpujul2022.html
listswww.lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MMQXSZXNJT6ERABJZAAICI3DQSQLCP3D/
githubwww.github.com/yaml/pyyaml/pull/386
listswww.lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZBJA3SGNJKCAYPSHOHWY3KBCWNM5NYK2/
listswww.lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/K5HEPD7LEVDPCITY5IMDYWXUMX37VFMY/
listswww.lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7PPAS6C4SZRDQLR7C22A5U3QOLXY33JX/
listswww.lists.opensuse.org/opensuse-security-announce/2020-05/msg00017.html
listswww.lists.opensuse.org/opensuse-security-announce/2020-04/msg00017.html
Rows per page

Data

Build on a solid foundation with Vulners data

We provide the essential building blocks for cybersecurity solutions with comprehensive, structured, and constantly updated vulnerability and exploits data

Api

Power your application with Vulners API

The Vulners REST API offers reliable, high-performance access to vulnerability intelligence, with 99.9% SLA uptime and CDN-backed data delivery for seamless global access

App

Assess and manage vulnerabilities with Vulners tools

Built on top of Vulners' database and SDK, end-user solutions give security professionals and developers lightweight and powerful tools for vulnerability remediation

Book a live demo
17 Jun 2026 03:02Current
9.7High risk
Vulners AI Score9.7
CVSS 3.19.8
CVSS 210
EPSS0.05299
CWE-20
pyyamlvulnerabilityarbitrary code executionuntrusted inputnvdcve-2020-1747
404