XSS in Remark Remark-html
CVE-2021-39199
remark-html is an open source nodejs library which compiles Markdown to HTML. In affected versions the documentation of remark-html has mentioned that it was safe by default. In practice the default was never safe and had to be opted into…
Vulnerability class: XSS (Cross-Site Scripting)
EPSS: 0.010 (59.7th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 10.0 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N.
Affected products
- Remark Remark-html
- Remarkjs Remark-html — versions >= 14.0.0, < 14.0.1, < 13.0.2
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM, Patch, Third Party Advisory)
- security-advisories@github.com (Patch, Third Party Advisory, x_refsource_MISC)
- security-advisories@github.com (Patch, Third Party Advisory, x_refsource_MISC, Release Notes)
- security-advisories@github.com (Product, Third Party Advisory, x_refsource_MISC)
Frequently asked questions
- What is CVE-2021-39199?
- CVE-2021-39199 is a critical-severity vulnerability in Remark Remark-html, classified under Cross-site Scripting. CVSS score: 10.0/10. Published 2021-09-07.
- How severe is CVE-2021-39199?
- Critical severity. CVSS v3 base score is 10.0 out of 10.