STINNER Victor <vstinner@python.org> added the comment: The CVE-2021-29921 was assigned to this vulnerability. ---------- title: ipaddress Should not reject IPv4 addresses with leading zeroes as ambiguously octal -> [security] CVE-2021-29921: ipaddress Should not reject IPv4 addresses with leading zeroes as ambiguously octal _______________________________________ Python tracker <report@bugs.python.org> <https://bugs.python.org/issue36384> _______________________________________