Denial of service in table parsing
The table extension in GitHub Flavored Markdown takes
O(n * n) time to parse certain inputs. An attacker could craft a markdown table which would take an unreasonably long time to process, causing a denial of service. This issue does not affect the upstream cmark project.
The issue has been fixed in
There are no known workarounds
Detected by Jonas Wagner at Google by #autofuzz: https://google.github.io/oss-fuzz/