What is CVE-2017-16019?

CVE-2017-16019 is a medium-severity vulnerability in Gitbook, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2018-06-04.

How severe is CVE-2017-16019?

Medium severity. CVSS v3 base score is 6.1 out of 10.

XSS in Gitbook

CVE-2017-16019

GitBook is a command line tool (and Node.js library) for building beautiful books using GitHub/Git and Markdown (or AsciiDoc). Stored Cross-Site-Scripting (XSS) is possible in GitBook before 3.2.2 by including code outside of backticks in any ebook. This code will be executed on the online reader.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2018-06-04 · last modified 2026-06-17.

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: 0.009 (60.0th percentile), scored 2026-10-24.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 60th percentile — 60.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: -0.000

Affected products

Gitbook
HackerOne Gitbook Node Module — versions <3.2.2

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

nodesecurity.io/advisories/159 (Third Party Advisory)
github.com/GitbookIO/gitbook/issues/1609 (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2017-16019?: CVE-2017-16019 is a medium-severity vulnerability in Gitbook, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2018-06-04.
How severe is CVE-2017-16019?: Medium severity. CVSS v3 base score is 6.1 out of 10.