CVE-2020-5238

CVE-2020-5238

The table extension in GitHub Flavored Markdown before version 0.29.0.gfm.1 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 version 0.29.0.gfm.1.

Source: CVE-2020-5238

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