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.
History

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cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published: 2018-03-09T20:00:00

Updated: 2024-08-05T06:31:04.518Z

Reserved: 2018-02-26T00:00:00

Link: CVE-2018-7537

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2018-03-09T20:29:00.660

Modified: 2024-11-21T04:12:19.227

Link: CVE-2018-7537

cve-icon Redhat

Severity : Moderate

Publid Date: 2018-03-06T00:00:00Z

Links: CVE-2018-7537 - Bugzilla