{"id":"UBUNTU-CVE-2016-5421","details":"Use-after-free vulnerability in libcurl before 7.50.1 allows attackers to control which connection is used or possibly have unspecified other impact via unknown vectors.","modified":"2026-01-30T00:59:25.164150Z","published":"2016-08-03T00:00:00Z","related":["USN-3048-1"],"upstream":["CVE-2016-5421"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2016-5421"},{"type":"REPORT","url":"https://curl.haxx.se/docs/adv_20160803C.html"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-3048-1"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2016-5421"}],"affected":[{"package":{"name":"curl","ecosystem":"Ubuntu:14.04:LTS","purl":"pkg:deb/ubuntu/curl@7.35.0-1ubuntu2.8?arch=source&distro=trusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"7.35.0-1ubuntu2.8"}]}],"versions":["7.32.0-1ubuntu1","7.33.0-1ubuntu1","7.34.0-1ubuntu1","7.35.0-1ubuntu1","7.35.0-1ubuntu2","7.35.0-1ubuntu2.1","7.35.0-1ubuntu2.2","7.35.0-1ubuntu2.3","7.35.0-1ubuntu2.5","7.35.0-1ubuntu2.6","7.35.0-1ubuntu2.7"],"ecosystem_specific":{"binaries":[{"binary_version":"7.35.0-1ubuntu2.8","binary_name":"curl"},{"binary_version":"7.35.0-1ubuntu2.8","binary_name":"libcurl3"},{"binary_version":"7.35.0-1ubuntu2.8","binary_name":"libcurl3-gnutls"},{"binary_version":"7.35.0-1ubuntu2.8","binary_name":"libcurl3-nss"},{"binary_version":"7.35.0-1ubuntu2.8","binary_name":"libcurl4-gnutls-dev"},{"binary_version":"7.35.0-1ubuntu2.8","binary_name":"libcurl4-nss-dev"},{"binary_version":"7.35.0-1ubuntu2.8","binary_name":"libcurl4-openssl-dev"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2016/UBUNTU-CVE-2016-5421.json"}},{"package":{"name":"curl","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/curl@7.47.0-1ubuntu2.1?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"7.47.0-1ubuntu2.1"}]}],"versions":["7.43.0-1ubuntu2","7.45.0-1ubuntu1","7.46.0-1ubuntu1","7.47.0-1ubuntu1","7.47.0-1ubuntu2"],"ecosystem_specific":{"binaries":[{"binary_version":"7.47.0-1ubuntu2.1","binary_name":"curl"},{"binary_version":"7.47.0-1ubuntu2.1","binary_name":"libcurl3"},{"binary_version":"7.47.0-1ubuntu2.1","binary_name":"libcurl3-gnutls"},{"binary_version":"7.47.0-1ubuntu2.1","binary_name":"libcurl3-nss"},{"binary_version":"7.47.0-1ubuntu2.1","binary_name":"libcurl4-gnutls-dev"},{"binary_version":"7.47.0-1ubuntu2.1","binary_name":"libcurl4-nss-dev"},{"binary_version":"7.47.0-1ubuntu2.1","binary_name":"libcurl4-openssl-dev"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2016/UBUNTU-CVE-2016-5421.json"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]}