Denial of service could be caused to markdown-it-py, before v2.2.0, if an attacker was allowed to force null assertions with specially crafted input.
github.com/executablebooks/markdown-it-py
github.com/executablebooks/markdown-it-py/commit/53ca3e9c2b9e9b295f6abf7f4ad2730a9b70f68c
github.com/executablebooks/markdown-it-py/commit/ae03c6107dfa18e648f6fdd1280f5b89092d5d49
github.com/executablebooks/markdown-it-py/pull/246
nvd.nist.gov/vuln/detail/CVE-2023-26303