{"id":"USN-4581-1","summary":"python2.7, python3.4, python3.5, python3.6 vulnerability","details":"It was discovered that Python incorrectly handled certain character\nsequences. A remote attacker could possibly use this issue to perform\nCRLF injection.\n","modified":"2026-02-10T04:41:57Z","published":"2020-10-14T14:35:01Z","related":["UBUNTU-CVE-2020-26116"],"upstream":["CVE-2020-26116","UBUNTU-CVE-2020-26116"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-4581-1"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2020-26116"}],"affected":[{"package":{"name":"python2.7","ecosystem":"Ubuntu:Pro:14.04:LTS","purl":"pkg:deb/ubuntu/python2.7@2.7.6-8ubuntu0.6+esm7?arch=source&distro=trusty/esm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.7.6-8ubuntu0.6+esm7"}]}],"versions":["2.7.5-8ubuntu3","2.7.5-8ubuntu4","2.7.6-2","2.7.6-2ubuntu1","2.7.6-3","2.7.6-3ubuntu1","2.7.6-4","2.7.6-4ubuntu1","2.7.6-5","2.7.6-7","2.7.6-8","2.7.6-8ubuntu0.2","2.7.6-8ubuntu0.3","2.7.6-8ubuntu0.4","2.7.6-8ubuntu0.5","2.7.6-8ubuntu0.6+esm2","2.7.6-8ubuntu0.6+esm3","2.7.6-8ubuntu0.6+esm5","2.7.6-8ubuntu0.6+esm6"],"ecosystem_specific":{"binaries":[{"binary_version":"2.7.6-8ubuntu0.6+esm7","binary_name":"idle-python2.7"},{"binary_version":"2.7.6-8ubuntu0.6+esm7","binary_name":"libpython2.7"},{"binary_version":"2.7.6-8ubuntu0.6+esm7","binary_name":"libpython2.7-dev"},{"binary_version":"2.7.6-8ubuntu0.6+esm7","binary_name":"libpython2.7-minimal"},{"binary_version":"2.7.6-8ubuntu0.6+esm7","binary_name":"libpython2.7-stdlib"},{"binary_version":"2.7.6-8ubuntu0.6+esm7","binary_name":"libpython2.7-testsuite"},{"binary_version":"2.7.6-8ubuntu0.6+esm7","binary_name":"python2.7"},{"binary_version":"2.7.6-8ubuntu0.6+esm7","binary_name":"python2.7-dev"},{"binary_version":"2.7.6-8ubuntu0.6+esm7","binary_name":"python2.7-examples"},{"binary_version":"2.7.6-8ubuntu0.6+esm7","binary_name":"python2.7-minimal"}],"availability":"Available 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https://ubuntu.com/pro"},"database_specific":{"cves_map":{"cves":[{"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N"},{"type":"Ubuntu","score":"medium"}],"id":"CVE-2020-26116"}],"ecosystem":"Ubuntu:Pro:14.04:LTS"},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-4581-1.json"}},{"package":{"name":"python3.4","ecosystem":"Ubuntu:Pro:14.04:LTS","purl":"pkg:deb/ubuntu/python3.4@3.4.3-1ubuntu1~14.04.7+esm8?arch=source&distro=trusty/esm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.4.3-1ubuntu1~14.04.7+esm8"}]}],"versions":["3.4~b1-0ubuntu3","3.4~b1-4ubuntu4","3.4~b1-4ubuntu6","3.4~b1-5ubuntu2","3.4~b2-1","3.4~b3-1ubuntu1","3.4~rc1-1build1","3.4~rc2-1","3.4~rc3-0ubuntu1","3.4.0-1","3.4.0-2ubuntu1","3.4.0-2ubuntu1.1","3.4.3-1ubuntu1~14.04.1","3.4.3-1ubuntu1~14.04.3","3.4.3-1ubuntu1~14.04.4","3.4.3-1ubuntu1~14.04.5","3.4.3-1ubuntu1~14.04.6","3.4.3-1ubuntu1~14.04.7","3.4.3-1ubuntu1~14.04.7+esm2","3.4.3-1ubuntu1~14.04.7+esm4","3.4.3-1ubuntu1~14.04.7+esm6","3.4.3-1ubuntu1~14.04.7+esm7"],"ecosystem_specific":{"binaries":[{"binary_version":"3.4.3-1ubuntu1~14.04.7+esm8","binary_name":"idle-python3.4"},{"binary_version":"3.4.3-1ubuntu1~14.04.7+esm8","binary_name":"libpython3.4"},{"binary_version":"3.4.3-1ubuntu1~14.04.7+esm8","binary_name":"libpython3.4-dev"},{"binary_version":"3.4.3-1ubuntu1~14.04.7+esm8","binary_name":"libpython3.4-minimal"},{"binary_version":"3.4.3-1ubuntu1~14.04.7+esm8","binary_name":"libpython3.4-stdlib"},{"binary_version":"3.4.3-1ubuntu1~14.04.7+esm8","binary_name":"libpython3.4-testsuite"},{"binary_version":"3.4.3-1ubuntu1~14.04.7+esm8","binary_name":"python3.4"},{"binary_version":"3.4.3-1ubuntu1~14.04.7+esm8","binary_name":"python3.4-dev"},{"binary_version":"3.4.3-1ubuntu1~14.04.7+esm8","binary_name":"python3.4-examples"},{"binary_version":"3.4.3-1ubuntu1~14.04.7+esm8","binary_name":"python3.4-minimal"},{"binary_version":"3.4.3-1ubuntu1~14.04.7+esm8","binary_name":"python3.4-venv"}],"availability":"Available with Ubuntu Pro (Infra-only): 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