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CVE-2020-7773— Cross-site Scripting (XSS)

Quick assessment

Affected
n/a markdown-it-highlightjs
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Valeriangalliat Markdown It Highlightjs是Valeriangalliat个人开发者的一个为Web页面Markdown提供高亮的Js代码库。 markdown-it-highlightjs 3.3.1之前版本存在跨站脚本漏洞，该漏洞源于可以在markdown-it-highlightjs内联代码突出显示功能中将恶意JavaScript作为lang的值插入。

CVSS 6.5 · Medium EPSS 1.36% · P71
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I. Basic Information for CVE-2020-7773

Vulnerability Information
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Vulnerability Title
Cross-site Scripting (XSS)
Source: CVE Program / CVE List V5
Vulnerability 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. 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);
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Valeriangalliat Markdown It Highlightjs 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Valeriangalliat Markdown It Highlightjs是Valeriangalliat个人开发者的一个为Web页面Markdown提供高亮的Js代码库。 markdown-it-highlightjs 3.3.1之前版本存在跨站脚本漏洞，该漏洞源于可以在markdown-it-highlightjs内联代码突出显示功能中将恶意JavaScript作为lang的值插入。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
- markdown-it-highlightjs unspecified ~ 3.3.1 -

II. Public POCs for CVE-2020-7773

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III. Intelligence Information for CVE-2020-7773

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Patches & Fixes for CVE-2020-7773 (1)

Vendor Advisories for CVE-2020-7773 (1)

Other References for CVE-2020-7773 (1)

Same Patch Batch · n/a · 2020-11-16 · 54 CVEs total

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Showing top 20 of 54 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same vendor: n/a

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