{"id":"USN-4378-1","summary":"flask vulnerability","details":"It was discovered that Flask incorrectly handled certain inputs.\nAn attacker could possibly use this issue to cause a denial of service.\n","modified":"2026-02-10T04:41:50Z","published":"2020-06-01T15:28:34Z","related":["UBUNTU-CVE-2018-1000656"],"upstream":["CVE-2018-1000656","UBUNTU-CVE-2018-1000656"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-4378-1"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2018-1000656"}],"affected":[{"package":{"name":"flask","ecosystem":"Ubuntu:Pro:14.04:LTS","purl":"pkg:deb/ubuntu/flask@0.10.1-2ubuntu0.1~esm1?arch=source&distro=trusty/esm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.10.1-2ubuntu0.1~esm1"}]}],"versions":["0.10.1-2","0.10.1-2build1"],"ecosystem_specific":{"binaries":[{"binary_name":"python-flask","binary_version":"0.10.1-2ubuntu0.1~esm1"},{"binary_name":"python3-flask","binary_version":"0.10.1-2ubuntu0.1~esm1"}],"availability":"Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"},"database_specific":{"cves_map":{"ecosystem":"Ubuntu:Pro:14.04:LTS","cves":[{"id":"CVE-2018-1000656","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"low"}]}]},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-4378-1.json"}},{"package":{"name":"flask","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/flask@0.10.1-2ubuntu0.1?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.10.1-2ubuntu0.1"}]}],"versions":["0.10.1-2build2"],"ecosystem_specific":{"binaries":[{"binary_name":"python-flask","binary_version":"0.10.1-2ubuntu0.1"},{"binary_name":"python3-flask","binary_version":"0.10.1-2ubuntu0.1"}],"availability":"No subscription required"},"database_specific":{"cves_map":{"ecosystem":"Ubuntu:16.04:LTS","cves":[{"id":"CVE-2018-1000656","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"low"}]}]},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-4378-1.json"}},{"package":{"name":"flask","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/flask@0.12.2-3ubuntu0.1?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.12.2-3ubuntu0.1"}]}],"versions":["0.12.2-2","0.12.2-3"],"ecosystem_specific":{"binaries":[{"binary_name":"python-flask","binary_version":"0.12.2-3ubuntu0.1"},{"binary_name":"python3-flask","binary_version":"0.12.2-3ubuntu0.1"}],"availability":"No subscription required"},"database_specific":{"cves_map":{"ecosystem":"Ubuntu:18.04:LTS","cves":[{"id":"CVE-2018-1000656","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"low"}]}]},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-4378-1.json"}}],"schema_version":"1.7.3"}