{"id":"USN-4940-1","summary":"pyyaml vulnerability","details":"It was discovered that PyYAML incorrectly handled untrusted YAML files with\nthe FullLoader loader. A remote attacker could possibly use this issue to\nexecute arbitrary code.\n","modified":"2026-02-10T04:42:09Z","published":"2021-05-10T14:19:33Z","related":["UBUNTU-CVE-2020-14343"],"upstream":["CVE-2020-14343","UBUNTU-CVE-2020-14343"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-4940-1"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2020-14343"}],"affected":[{"package":{"name":"pyyaml","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/pyyaml@5.3.1-1ubuntu0.1?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.3.1-1ubuntu0.1"}]}],"versions":["5.1.2-1","5.1.2-1build1","5.3-1ubuntu1","5.3-1ubuntu2","5.3-1ubuntu3","5.3-2","5.3.1-1"],"ecosystem_specific":{"binaries":[{"binary_version":"5.3.1-1ubuntu0.1","binary_name":"python-yaml"},{"binary_version":"5.3.1-1ubuntu0.1","binary_name":"python3-yaml"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-4940-1.json","cves_map":{"cves":[{"severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}],"id":"CVE-2020-14343"}],"ecosystem":"Ubuntu:20.04:LTS"}}}],"schema_version":"1.7.3"}