CVE-2023-22486

cmark-gfm is GitHub’s fork of cmark, a CommonMark parsing and rendering
library and program in C. Versions prior to 0.29.0.gfm.7 contain a
polynomial time complexity issue in handle_close_bracket that may lead to
unbounded resource exhaustion and subsequent denial of service. This
vulnerability has been patched in 0.29.0.gfm.7.