{"id":"CVE-2019-16056","details":"An issue was discovered in Python through 2.7.16, 3.x through 3.5.7, 3.6.x through 3.6.9, and 3.7.x through 3.7.4. The email module wrongly parses email addresses that contain multiple @ characters. An application that uses the email module and implements some kind of checks on the From/To headers of a message could be tricked into accepting an email address that should be denied. An attack may be the same as in CVE-2019-11340; however, this CVE applies to Python more generally.","aliases":["PSF-2019-5"],"modified":"2026-04-16T04:31:54.844833268Z","published":"2019-09-06T18:15:15.443Z","related":["ALSA-2020:1605","SUSE-RU-2020:1342-1","SUSE-SU-2019:2743-1","SUSE-SU-2019:2748-1","SUSE-SU-2019:2748-2","SUSE-SU-2019:2798-1","SUSE-SU-2019:2802-1","SUSE-SU-2020:0114-1","SUSE-SU-2020:0234-1","SUSE-SU-2020:0302-1","SUSE-SU-2020:2699-1","SUSE-SU-2020:3563-1","SUSE-SU-2021:14198-1","openSUSE-SU-2019:2389-1","openSUSE-SU-2019:2393-1","openSUSE-SU-2019:2438-1","openSUSE-SU-2019:2453-1","openSUSE-SU-2020:0086-1","openSUSE-SU-2024:11202-1","openSUSE-SU-2024:11284-1"],"references":[{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ER6LONC2B2WYIO56GBQUDU6QTWZDPUNQ/"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/M34WOYCDKTDE5KLUACE2YIEH7D37KHRX/"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QP46PQSUKYPGWTADQ67NOV3BUN6JM34Z/"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4X3HW5JRZ7GCPSR7UHJOLD7AWLTQCDVR/"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/COATURTCY7G67AYI6UDV5B2JZTBCKIDX/"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QASRD4E2G65GGEHYKVHYCXB2XWAGTNL4/"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NF3DRDGMVIRYNZMSLJIHNW47HOUQYXVG/"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/K4KZEFP6E4YPYB52AF4WXCUDSGQOTF37/"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/K7HNVIFMETMFWWWUNTB72KYJYXCZOS5V/"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BEARDOTXCYPYELKBD2KWZ27GSPXDI3GQ/"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SDQQ56P7ZZR64XV5DUVWNSNXKKEXUG2J/"},{"type":"WEB","url":"https://lists.apache.org/thread.html/r1b103833cb5bc8466e24ff0ecc5e75b45a705334ab6a444e64e840a0%40%3Cissues.bookkeeper.apache.org%3E"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/E2HP37NUVLQSBW3J735A2DQDOZ4ZGBLY/"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JCPGLTTOBB3QEARDX4JOYURP6ELNNA2V/"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OYGESQSGIHDCIGOBVF7VXCMIE6YDWRYB/"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZBTGPBUABGXZ7WH7677OEM3NSP6ZEA76/"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2019:3948"},{"type":"ADVISORY","url":"https://usn.ubuntu.com/4151-2/"},{"type":"ADVISORY","url":"http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00040.html"},{"type":"ADVISORY","url":"http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00062.html"},{"type":"ADVISORY","url":"http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00063.html"},{"type":"ADVISORY","url":"https://lists.debian.org/debian-lts-announce/2019/09/msg00019.html"},{"type":"ADVISORY","url":"https://lists.debian.org/debian-lts-announce/2020/07/msg00011.html"},{"type":"ADVISORY","url":"https://security.netapp.com/advisory/ntap-20190926-0005/"},{"type":"ADVISORY","url":"https://lists.debian.org/debian-lts-announce/2019/09/msg00018.html"},{"type":"ADVISORY","url":"https://lists.debian.org/debian-lts-announce/2020/08/msg00034.html"},{"type":"ADVISORY","url":"https://usn.ubuntu.com/4151-1/"},{"type":"ADVISORY","url":"http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00021.html"},{"type":"ADVISORY","url":"http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00012.html"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2019:3725"},{"type":"REPORT","url":"https://bugs.python.org/issue34155"},{"type":"FIX","url":"https://www.oracle.com/security-alerts/cpujul2020.html"},{"type":"FIX","url":"https://github.com/python/cpython/commit/8cb65d1381b027f0b09ee36bfed7f35bb4dec9a9"},{"type":"FIX","url":"https://www.oracle.com/security-alerts/cpuapr2020.html"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/python/cpython","events":[{"introduced":"0"},{"last_affected":"413a49145e35c7a2d3a7de27c5a1828449c9b2e5"},{"introduced":"0"},{"last_affected":"c1e689ec9677f3222790aaf7da5c8c7361e50115"},{"introduced":"0"},{"last_affected":"c37a4fdf5472b9460cc38885342ef59bce05753f"},{"introduced":"0"},{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