Description
Nunjucks is a full featured templating engine for JavaScript. Versions 2.4.2 and lower have a cross site scripting (XSS) vulnerability in autoescape mode. In autoescape mode, all template vars should automatically be escaped. By using an array for the keys, such as `name[]=<script>alert(1)</script>`, it is possible to bypass autoescaping and inject content into the DOM.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| HackerOne | nunjucks node module | <=2.4.2 | — |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| npm | nunjucks | < 2.4.3 | 2.4.3 | GHSA-f7ph-p5rv-phw2 |