CVE-2020-5238
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2020-5238
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-5238.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2020-5238
- Downstream
- Related
- Published
- 2020-07-01T23:15:10Z
- Modified
- 2025-10-14T17:53:49.190406Z
- Severity
-
- 6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
- Summary
- [none]
- Details
-
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.
- References
-
- https://github.com/github/cmark-gfm/commit/85d895289c5ab67f988ca659493a64abb5fec7b4
- https://github.com/github/cmark-gfm/security/advisories/GHSA-7gc6-9qr5-hc85
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TCDHBTUFIOYRIS5HAS6PZNBNMB7IOAX3/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WMQFOQQCWOAMQ4I2XIVCVOXXIJ75HDCW/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZGJH2A4VAV54X6NSCNNGSEIGIIY5N2VR/