{"id":"CVE-2020-14001","aliases":["GHSA-mqm2-cgpr-p4m6"],"url":"https://o3.security/vulnerability/CVE-2020-14001","summary":"Unintended read access in kramdown gem","details":"The kramdown gem before 2.3.0 for Ruby processes the template option inside Kramdown documents by default, which allows unintended read access (such as template=\"/etc/passwd\") or unintended embedded Ruby code execution (such as a string that begins with template=\"string://<%= `). NOTE: kramdown is used in Jekyll, GitLab Pages, GitHub Pages, and Thredded Forum.","published":"2020-07-17T16:15:11.230Z","modified":"2026-07-08T05:56:43.240189497Z","cvss":{"score":9.8,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[{"ecosystem":"RubyGems","name":"kramdown","fixedVersion":"2.3.0"}],"fix":{"url":"https://github.com/gettalong/kramdown/commit/1b8fd33c3120bfc6e5164b449e2c2fc9c9306fde","label":"gettalong/kramdown@1b8fd33"},"references":[{"type":"WEB","url":"https://lists.apache.org/thread.html/r96df7899fbb456fe2705882f710a0c8e8614b573fbffd8d12e3f54d2%40%3Cnotifications.fluo.apache.org%3E"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ENMMGKHRQIZ3QKGOMBBBGB6B4LB5I7NQ/"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KBLTGBYU7NKOUOHDKVCU4GFZMGA6BP4L/"},{"type":"ADVISORY","url":"https://github.com/gettalong/kramdown"},{"type":"ADVISORY","url":"https://kramdown.gettalong.org"},{"type":"ADVISORY","url":"https://kramdown.gettalong.org/news.html"},{"type":"ADVISORY","url":"https://lists.debian.org/debian-lts-announce/2020/08/msg00014.html"},{"type":"ADVISORY","url":"https://rubygems.org/gems/kramdown"},{"type":"ADVISORY","url":"https://security.netapp.com/advisory/ntap-20200731-0004/"},{"type":"ADVISORY","url":"https://usn.ubuntu.com/4562-1/"},{"type":"ADVISORY","url":"https://www.debian.org/security/2020/dsa-4743"},{"type":"FIX","url":"https://github.com/gettalong/kramdown/commit/1b8fd33c3120bfc6e5164b449e2c2fc9c9306fde"},{"type":"FIX","url":"https://github.com/gettalong/kramdown/compare/REL_2_2_1...REL_2_3_0"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-08T05:56:43.240189497Z"}}