Cross-Site Scripting in handlebars
Versions of `handlebars` prior to 4.0.0 are affected by a cross-site scripting vulnerability when attributes in handlebar templates are not quoted. ## Proof of Concept Template: ```<a href={{foo}}/>``` Input: ```{ 'foo' : 'test.com onload=alert(1)'}``` Rendered result: ```<a href=test.com onload=alert(1)/>``` ## Recommendation Update to version 4.0.0 or later. Alternatively, ensure that all attributes in handlebars templates are encapsulated with quotes.
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describes (1)
Related CVEs.
| ID | severity | exploitable | ||
|---|---|---|---|---|
| CVE-2015-8861US | medium6.1 | — | ||
The handlebars package before 4.0.0 for Node.js allows remote attackers to conduct cross-site scripting (XSS) attacks by leveraging a template with an attribute that is not quoted. | ||||
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references
External citations — patches, advisories, analysis.
- http://www.openwall.com/lists/oss-security/2016/04/20/11WEB
- http://www.securityfocus.com/bid/96434WEB
- https://blog.srcclr.com/handlebars_vulnerability_research_findingsWEB
- https://github.com/advisories/GHSA-9prh-257w-9277ADVISORY
- https://github.com/wycats/handlebars.jsPACKAGE
- https://github.com/wycats/handlebars.js/pull/1083WEB
- https://nvd.nist.gov/vuln/detail/CVE-2015-8861ADVISORY
- https://www.npmjs.com/advisories/61WEB
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