{"id":"CVE-2019-9844","aliases":["GHSA-qj3f-9gmq-fwv5"],"url":"https://o3.security/vulnerability/CVE-2019-9844","summary":"Cross-Site Scripting in simple-markdown","details":"simple-markdown.js in Khan Academy simple-markdown before 0.4.4 allows XSS via a data: or vbscript: URI.","published":"2019-04-09T02:29:02.163Z","modified":"2026-07-08T05:55:56.223347916Z","cvss":{"score":6.1,"severity":"MEDIUM","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"},"epss":{"score":0.01509,"percentile":0.72058,"asOf":"2026-08-23"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"npm","name":"simple-markdown","fixedVersion":"0.4.4"}],"fix":{"url":"https://github.com/Khan/simple-markdown/pull/63","label":"Khan/simple-markdown#63"},"references":[{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JFLP3KJVSV5VWMNEBRXLGRVYFXOV5KOG/"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KZG2I7VH7WLSEUQ77KYP5CRAVFT2RK2U/"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/O5EFW655O3BXZYAPB65XEREXB2DSNSOT/"},{"type":"ADVISORY","url":"https://github.com/Khan/simple-markdown/pull/63"},{"type":"ADVISORY","url":"https://www.npmjs.com/package/simple-markdown/v/0.4.4"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-08T05:55:56.223347916Z"}}