What’s Vulnerable › Vulnerabilities

CVE-2016-10547

• Severity: medium (CVSS 6.1 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.4% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2018-05-31 · updated 2026-06-17
• Weakness: CWE-79

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

• Mozilla Nunjucks: through 2.4.2

References

• https://github.com/matt-/nunjucks_test
• https://github.com/mozilla/nunjucks/issues/835
• https://nodesecurity.io/advisories/147
• https://github.com/matt-/nunjucks_test
• https://github.com/mozilla/nunjucks/issues/835
• https://nodesecurity.io/advisories/147

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