Medium
Security advisory
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[]=`, it is possible to bypass autoescaping and inject content into the DOM.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2016-10547
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 09:38 UTC · Revision 1
Source evidence
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[]=`, it is possible to bypass autoescaping and inject content into the DOM.
osv:CVE-2016-10547
Complete source record
{
"id": "5118163364d014d821b7149da94290353fc27682d8f5650ffdb3de9ef50da049",
"url": "https://osv.dev/vulnerability/CVE-2016-10547",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2016-10547",
"summary": "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[]=`, it is possible to bypass autoescaping and inject content into the DOM.",
"evidence": "osv:CVE-2016-10547",
"products": [],
"severity": "medium",
"structured": {
"id": "CVE-2016-10547",
"aliases": [
"CVE-2016-10547",
"GHSA-f7ph-p5rv-phw2"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/mozilla/nunjucks",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"last_affected": "7faaf2c6d23f771bc03bc7b56d3dd0a942ab8643"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:mozilla:nunjucks:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "0"
},
{
"last_affected": "2.4.2"
}
],
"source": "CPE_RANGE"
}
]
}
}
],
"versions": [
"v2.4.2",
"v2.4.1",
"v2.4.0",
"v2.3.0",
"v2.2.0",
"v2.1.0",
"v2.0.0",
"v1.3.3",
"v1.3.2",
"v.1.3.1",
"v1.3.0",
"v1.2.0",
"v1.1.0",
"v1.0.7",
"v1.0.5",
"v1.0.4",
"v1.0.2",
"v1.0.1",
"v1.0.0",
"v0.1.9",
"v0.1.8",
"v0.1.7",
"v0.1.6",
"v0.1.5",
"v0.1.4",
"v0.1.2",
"v0.1.1",
"v0.1.0"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2016-10547.json"
}
}
],
"modified": "2026-10-20T10:47:12.454356936Z",
"provider": "osv",
"references": [
"https://github.com/matt-/nunjucks_test",
"https://github.com/mozilla/nunjucks/issues/835",
"https://nodesecurity.io/advisories/147"
],
"provider_metadata": {}
},
"related_cves": [
{
"value": "CVE-2016-10547",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 379351,
"published_at": "2018-05-31T20:29:01.737+00:00"
}