XSS in Khanacademy Simple-Markdown
CVE-2019-9844
simple-markdown.js in Khan Academy simple-markdown before 0.4.4 allows XSS via a data: or vbscript: URI.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.013 (68.8th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 69th percentile — 68.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.013 · newest: 0.013 · change: 0.000
Affected products
- Khanacademy Simple-Markdown
- Fedoraproject Fedora — versions 30
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/Khan/simple-markdown/pull/63 (Third Party Advisory)
- www.npmjs.com/package/simple-markdown/v/0.4.4 (Third Party Advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
Frequently asked questions
- What is CVE-2019-9844?
- CVE-2019-9844 is a medium-severity vulnerability in Khanacademy Simple-Markdown, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2019-04-09.
- How severe is CVE-2019-9844?
- Medium severity. CVSS v3 base score is 6.1 out of 10.
- Is CVE-2019-9844 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.