CVE-2026-88753 – A Regular-Expression Denial of Service (ReDoS) in the Markdown2. extract_metadata() functi

A Regular-Expression Denial of Service (ReDoS) in the Markdown2. extract_metadata() function (lib/markdown2.py) of trentm markdown2 through v2.5.5 allows attackers to cause a Denial of Service (DoS) via a crafted Markdown document.