CVE-2020-7773

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);

CVSS v3 6.5 MEDIUM
CVSS v2.0 4.3 MEDIUM

6.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

4.3^/10

CVSS v2.0 : MEDIUM

Vector : AV:N/AC:M/Au:N/C:N/I:P/A:N

Exploitability : 8.6 / Impact : 2.9

Access Vector NETWORK

Access Complexity MEDIUM

Authentication NONE

Confidentiality Impact NONE

Integrity Impact PARTIAL

Availability Impact NONE

References

Link	Resource
https://github.com/valeriangalliat/markdown-it-highlightjs/blob/v3.3.0/index.js%23L52	Broken Link
https://github.com/valeriangalliat/markdown-it-highlightjs/pull/14	Exploit Third Party Advisory
https://snyk.io/vuln/SNYK-JS-MARKDOWNITHIGHLIGHTJS-1040461	Mitigation Third Party Advisory
https://github.com/valeriangalliat/markdown-it-highlightjs/blob/v3.3.0/index.js%23L52	Broken Link
https://github.com/valeriangalliat/markdown-it-highlightjs/pull/14	Exploit Third Party Advisory
https://snyk.io/vuln/SNYK-JS-MARKDOWNITHIGHLIGHTJS-1040461	Mitigation Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:markdown-it-highlightjs_project:markdown-it-highlightjs:*:*:*:*:*:node.js:*:*

History

No history.

Information

Published : 2020-11-16 12:15

Updated : 2024-11-21 05:37

NVD link : CVE-2020-7773

Mitre link : CVE-2020-7773

CVE.ORG link : CVE-2020-7773

JSON object : View

Products Affected

markdown-it-highlightjs_project

markdown-it-highlightjs

CWE

CWE-79

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

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