{"id":"ALPINE-CVE-2018-7537","details":"An issue was discovered in Django 2.0 before 2.0.3, 1.11 before 1.11.11, and 1.8 before 1.8.19. If django.utils.text.Truncator's chars() and words() methods were passed the html=True argument, they were extremely slow to evaluate certain inputs due to a catastrophic backtracking vulnerability in a regular expression. The chars() and words() methods are used to implement the truncatechars_html and truncatewords_html template filters, which were thus vulnerable.","modified":"2026-10-27T08:30:10.581196590Z","published":"2018-03-09T20:29:00.660Z","upstream":["CVE-2018-7537"],"references":[{"type":"ADVISORY","url":"https://security.alpinelinux.org/vuln/CVE-2018-7537"}],"affected":[{"package":{"name":"py-django","ecosystem":"Alpine:v3.10","purl":"pkg:apk/alpine/py-django?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.11.11-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2018-7537.json"}},{"package":{"name":"py-django","ecosystem":"Alpine:v3.4","purl":"pkg:apk/alpine/py-django?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.8.19-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2018-7537.json"}},{"package":{"name":"py-django","ecosystem":"Alpine:v3.5","purl":"pkg:apk/alpine/py-django?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.8.19-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2018-7537.json"}},{"package":{"name":"py-django","ecosystem":"Alpine:v3.6","purl":"pkg:apk/alpine/py-django?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.11.11-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2018-7537.json"}},{"package":{"name":"py-django","ecosystem":"Alpine:v3.7","purl":"pkg:apk/alpine/py-django?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.11.11-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2018-7537.json"}},{"package":{"name":"py-django","ecosystem":"Alpine:v3.8","purl":"pkg:apk/alpine/py-django?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.11.11-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2018-7537.json"}},{"package":{"name":"py-django","ecosystem":"Alpine:v3.9","purl":"pkg:apk/alpine/py-django?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.11.11-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2018-7537.json"}},{"package":{"name":"py3-django","ecosystem":"Alpine:v3.11","purl":"pkg:apk/alpine/py3-django?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.11.11-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2018-7537.json"}},{"package":{"name":"py3-django","ecosystem":"Alpine:v3.12","purl":"pkg:apk/alpine/py3-django?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.11.11-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2018-7537.json"}},{"package":{"name":"py3-django","ecosystem":"Alpine:v3.13","purl":"pkg:apk/alpine/py3-django?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.11.11-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2018-7537.json"}},{"package":{"name":"py3-django","ecosystem":"Alpine:v3.14","purl":"pkg:apk/alpine/py3-django?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.11.11-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2018-7537.json"}},{"package":{"name":"py3-django","ecosystem":"Alpine:v3.15","purl":"pkg:apk/alpine/py3-django?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.11.11-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2018-7537.json"}},{"package":{"name":"py3-django","ecosystem":"Alpine:v3.16","purl":"pkg:apk/alpine/py3-django?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.11.11-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2018-7537.json"}},{"package":{"name":"py3-django","ecosystem":"Alpine:v3.17","purl":"pkg:apk/alpine/py3-django?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.11.11-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2018-7537.json"}},{"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