CVE-2020-7773

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Summary

CVECVE-2020-7773
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2020-11-16 12:15:00 UTC
Updated2020-12-01 13:23:00 UTC
DescriptionThis affects the package markdown-it-highlightjs before 3.3.1. It is possible insert malicious JavaScript as a value of lang in the markdown-it-highlightjs Inline code highlighting feature. const markdownItHighlightjs = require("markdown-it-highlightjs"); const md = require('markdown-it'); const reuslt_xss = md() .use(markdownItHighlightjs, { inline: true }) .render('console.log(42){.">js}'); console.log(reuslt_xss);

Risk And Classification

Problem Types: CWE-79

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Markdown-it-highlightjs Project Markdown-it-highlightjs All All All All
Application Markdown-it-highlightjs Project Markdown-it-highlightjs All All All All

References

ReferenceSourceLinkTags
N/A CONFIRM github.com Broken Link
Cross-site Scripting (XSS) in markdown-it-highlightjs | Snyk CONFIRM snyk.io Mitigation, Third Party Advisory
fix: escape invalid lang characters (XSS) by ooooooo-q · Pull Request #14 · valeriangalliat/markdown-it-highlightjs · GitHub CONFIRM github.com Exploit, Third Party Advisory
markdown-it-highlightjs/index.js at v3.3.0 · valeriangalliat/markdown-it-highlightjs · GitHub MITRE github.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

LEGACY: ooooooo_q

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