Options structure open to XSS if passed unfiltered
Impact
In Highcharts versions 8 and earlier, the chart options structure was not systematically filtered for XSS vectors. The potential impact was that content from untrusted sources could execute code in the end user's browser. Especially when using the useHTML flag, HTML string options would be inserted unfiltered directly into the DOM. When useHTML was false, malicious code could be inserted by using various character replacement tricks or malformed HTML.
If your chart configuration comes from a trusted source like a static setup or pre-filtered HTML (or no markup at all in the configuration), you are not impacted.
Patches
In version 9, the whole rendering layer was refactored to use an DOMParser, an AST and tag and HTML allow-listing to make sure only safe content entered the DOM. In addition, prototype pollution was stopped.
Cross-Site Scripting in highcharts
Versions of highcharts prior to 7.2.2 or 8.1.1 are vulnerable to Cross-Site Scripting (XSS). The package fails to sanitize href values and does not restrict URL schemes, allowing attackers to execute arbitrary JavaScript in a victim's browser if they click the link.
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Bumps highcharts from 6.2.0 to 9.0.0. This update includes security fixes.
Vulnerabilities fixed
Sourced from The GitHub Security Advisory Database.
Sourced from The GitHub Security Advisory Database.
Commits
5db01d7v9.0.0e4c4afev8.2.28ff5bcaFixed mixins case.7b6ad2bRevert "Fixed mixins case."a50b16eFixed mixins case.a640652Prepared fix of mixins case.865e21av8.2.07f564e5v8.1.2a20f9d6v8.1.1a9ed457v8.1.0Dependabot will resolve any conflicts with this PR as long as you don't alter it yourself. You can also trigger a rebase manually by commenting
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