Security vulnerabilities and automated fixes for markdown it issues
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linkify-it versions up to 5.0.1 can be forced into excessive processing time when autolinking a specially crafted mailto: link, allowing a remote attacker to degrade or stall the parsing thread. Upgrading to linkify-it 5.0.2 closes the issue; any application that runs linkify-it (directly or via markdown-it) against untrusted text should update immediately.