Ecosyste.ms: Advisories

Security Advisories: GSA_kwCzR0hTQS1tNGdxLXgyNGotanBtZs4ABAkl

Mermaid allows prototype pollution in bundled version of DOMPurify

The following bundled files within the Mermaid NPM package contain a bundled version of DOMPurify that is vulnerable to https://github.com/cure53/DOMPurify/security/advisories/GHSA-mmhx-hmjr-r674, potentially resulting in an XSS attack.

This affects the built:

• dist/mermaid.min.js
• dist/mermaid.js
• dist/mermaid.esm.mjs
• dist/mermaid.esm.min.mjs

This will also affect users that use the above files via a CDN link, e.g. https://cdn.jsdelivr.net/npm/[email protected]/dist/mermaid.min.js

Users that use the default NPM export of mermaid, e.g. import mermaid from 'mermaid', or the dist/mermaid.core.mjs file, do not use this bundled version of DOMPurify, and can easily update using their package manager with something like npm audit fix.

Patches

• develop branch: 6c785c93166c151d27d328ddf68a13d9d65adc00
• backport to v10: 92a07ffe40aab2769dd1c3431b4eb5beac282b34

Permalink: https://github.com/advisories/GHSA-m4gq-x24j-jpmf
JSON: https://advisories.ecosyste.ms/api/v1/advisories/GSA_kwCzR0hTQS1tNGdxLXgyNGotanBtZs4ABAkl
Source: GitHub Advisory Database
Origin: Unspecified
Severity: High
Classification: General
Published: about 10 hours ago
Updated: about 10 hours ago

CVSS Score: 7.0
CVSS vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:L

Identifiers: GHSA-m4gq-x24j-jpmf
References:

• https://github.com/cure53/DOMPurify/security/advisories/GHSA-mmhx-hmjr-r674
• https://github.com/mermaid-js/mermaid/security/advisories/GHSA-m4gq-x24j-jpmf
• https://github.com/mermaid-js/mermaid/commit/6c785c93166c151d27d328ddf68a13d9d65adc00
• https://github.com/mermaid-js/mermaid/commit/92a07ffe40aab2769dd1c3431b4eb5beac282b34
• https://github.com/advisories/GHSA-m4gq-x24j-jpmf

Repository: https://github.com/cure53/DOMPurify
Blast Radius: 28.9

Affected Packages