CVE-2022-1471

SnakeYaml's Constructor() class does not restrict types which can be instantiated during deserialization. Deserializing yaml content provided by an attacker can lead to remote code execution. We recommend using SnakeYaml's SafeConsturctor when parsing untrusted content to restrict deserialization. We recommend upgrading to version 2.0 and beyond.

• CWE-20
• CWE-502

• http://packetstormsecurity.com/files/175095/PyTorch-Model-Server-Registration-Deserialization-Remote-Code-Execution.html
• http://www.openwall.com/lists/oss-security/2023/11/19/1
• https://bitbucket.org/snakeyaml/snakeyaml/issues/561/cve-2022-1471-vulnerability-in#comment-64581479Issue Tracking, Third Party Advisory
• https://confluence.atlassian.com/security/cve-2022-1471-snakeyaml-library-rce-vulnerability-in-multiple-products-1296171009.html
• https://github.com/google/security-research/security/advisories/GHSA-mjmj-j48q-9wg2Exploit, Third Party Advisory
• https://github.com/mbechler/marshalsecExploit, Third Party Advisory
• https://groups.google.com/g/kubernetes-security-announce/c/mwrakFaEdnc
• https://infosecwriteups.com/%EF%B8%8F-inside-the-160-comment-fight-to-fix-snakeyamls-rce-default-1a20c5ca4d4c
• https://security.netapp.com/advisory/ntap-20230818-0015/
• https://security.netapp.com/advisory/ntap-20240621-0006/
• https://www.github.com/mbechler/marshalsec/blob/master/marshalsec.pdf?raw=trueExploit, Third Party Advisory
• http://packetstormsecurity.com/files/175095/PyTorch-Model-Server-Registration-Deserialization-Remote-Code-Execution.html
• http://www.openwall.com/lists/oss-security/2023/11/19/1
• https://bitbucket.org/snakeyaml/snakeyaml/issues/561/cve-2022-1471-vulnerability-in#comment-64581479Issue Tracking, Third Party Advisory
• https://github.com/google/security-research/security/advisories/GHSA-mjmj-j48q-9wg2Exploit, Third Party Advisory
• https://github.com/mbechler/marshalsecExploit, Third Party Advisory
• https://groups.google.com/g/kubernetes-security-announce/c/mwrakFaEdnc
• https://security.netapp.com/advisory/ntap-20230818-0015/
• https://security.netapp.com/advisory/ntap-20240621-0006/
• https://www.github.com/mbechler/marshalsec/blob/master/marshalsec.pdf?raw=trueExploit, Third Party Advisory

Published

Dec 1, 2022

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
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