GHSA-F246-XRRJ-G8J6

Vulnerability from github – Published: 2022-02-10 20:19 – Updated: 2023-09-05 22:52
VLAI
Summary
Cross-site Scripting in markdown-it-highlightjs
Details

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);
Severity
6.1 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Show details on source website
To clipboard 

{
  "affected": [
    {
      "package": {
        "ecosystem": "npm",
        "name": "markdown-it-highlightjs"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.3.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2020-7773"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-79"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2021-04-15T21:12:47Z",
    "nvd_published_at": "2020-11-16T12:15:00Z",
    "severity": "MODERATE"
  },
  "details": "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. \n\n```js\nconst markdownItHighlightjs = require(\"markdown-it-highlightjs\");\nconst md = require(\u0027markdown-it\u0027); \nconst reuslt_xss = md().use(markdownItHighlightjs, { inline: true }).render(\u0027console.log(42){.\"\u003ejs}\u0027); \nconsole.log(reuslt_xss);\n```",
  "id": "GHSA-f246-xrrj-g8j6",
  "modified": "2023-09-05T22:52:01Z",
  "published": "2022-02-10T20:19:47Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-7773"
    },
    {
      "type": "WEB",
      "url": "https://github.com/valeriangalliat/markdown-it-highlightjs/pull/14"
    },
    {
      "type": "WEB",
      "url": "https://github.com/valeriangalliat/markdown-it-highlightjs/blob/v3.3.0/index.js%23L52"
    },
    {
      "type": "WEB",
      "url": "https://snyk.io/vuln/SNYK-JS-MARKDOWNITHIGHLIGHTJS-1040461"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Cross-site Scripting in markdown-it-highlightjs"
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.