Markdown-it Linkify-it vulnerabilities

• markdown-it linkify-it linkify-it: Quadratic-complexity DoS via the `mailto:` validator scan-loop on attacker text CVE-2026-59887 Fix available 7.5 HighJuly 8, 2026
• markdown-it linkify-it linkify-it: Quadratic algorithmic complexity in LinkifyIt#match scan loop CVE-2026-48801 Fix available 8.7 HighJune 26, 2026