{"id":"ALPINE-CVE-2021-33571","details":"In Django 2.2 before 2.2.24, 3.x before 3.1.12, and 3.2 before 3.2.4, URLValidator, validate_ipv4_address, and validate_ipv46_address do not prohibit leading zero characters in octal literals. This may allow a bypass of access control that is based on IP addresses. (validate_ipv4_address and validate_ipv46_address are unaffected with Python 3.9.5+..) .","modified":"2026-11-03T06:32:58.479335893Z","published":"2021-06-08T18:15:08.517Z","upstream":["CVE-2021-33571"],"references":[{"type":"ADVISORY","url":"https://security.alpinelinux.org/vuln/CVE-2021-33571"}],"affected":[{"package":{"name":"py3-django","ecosystem":"Alpine:v3.13","purl":"pkg:apk/alpine/py3-django?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.1.13-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-33571.json"}},{"package":{"name":"py3-django","ecosystem":"Alpine:v3.14","purl":"pkg:apk/alpine/py3-django?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.1.13-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-33571.json"}},{"package":{"name":"py3-django","ecosystem":"Alpine:v3.15","purl":"pkg:apk/alpine/py3-django?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.1.13-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-33571.json"}},{"package":{"name":"py3-django","ecosystem":"Alpine:v3.16","purl":"pkg:apk/alpine/py3-django?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.1.13-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-33571.json"}},{"package":{"name":"py3-django","ecosystem":"Alpine:v3.17","purl":"pkg:apk/alpine/py3-django?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.1.13-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-33571.json"}},{"package":{"name":"py3-django","ecosystem":"Alpine:v3.18","purl":"pkg:apk/alpine/py3-django?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.1.13-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-33571.json"}},{"package":{"name":"py3-django","ecosystem":"Alpine:v3.19","purl":"pkg:apk/alpine/py3-django?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.1.13-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-33571.json"}},{"package":{"name":"py3-django","ecosystem":"Alpine:v3.20","purl":"pkg:apk/alpine/py3-django?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.1.13-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-33571.json"}},{"package":{"name":"py3-django","ecosystem":"Alpine:v3.21","purl":"pkg:apk/alpine/py3-django?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.1.13-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-33571.json"}},{"package":{"name":"py3-django","ecosystem":"Alpine:v3.22","purl":"pkg:apk/alpine/py3-django?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.1.13-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-33571.json"}},{"package":{"name":"py3-django","ecosystem":"Alpine:v3.23","purl":"pkg:apk/alpine/py3-django?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.1.13-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-33571.json"}},{"package":{"name":"py3-django","ecosystem":"Alpine:v3.24","purl":"pkg:apk/alpine/py3-django?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.1.13-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-33571.json"}}],"schema_version":"1.9.2","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"}]}