Package Instance

Cross-Site Scripting in mermaid
Versions of `mermaid` prior to 8.2.3 are vulnerable to Cross-Site Scripting. If malicious input  such as `A["<img src=invalid onerror=alert('XSS')></img>"] ` is provided to the application, it will execute the code instead of rendering it as text due to improper output encoding.


## Recommendation

Upgrade to version 8.2.3 or later

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Mermaid is a Javascript based diagramming and charting tool that uses Markdown-inspired text definitions and a renderer to create and modify complex diagrams., malicious diagrams can run javascript code at diagram readers' machines. Users should upgrade to to receive a patch. There are no known workarounds aside from upgrading.

Prototype pollution vulnerability found in Mermaid's 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/mermaid@10.9.2/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

Cross-Site Scripting
If malicious input such as `A["<img src=invalid onerror=alert('XSS')></img>"]` is provided to the application, it will execute the code instead of rendering it as text due to improper output encoding.

Cross-site Scripting in Mermaid
Mermaid before 8.11.0 allows XSS when the antiscript feature is used.