[Security] Bump highcharts from 8.2.0 to 9.0.1 in /example/web

[dependabot-preview[bot]]

Bumps highcharts from 8.2.0 to 9.0.1.

Commits

• 2293652 v9.0.1
• 5db01d7 v9.0.0
• e4c4afe v8.2.2
• 8ff5bca Fixed mixins case.
• 7b6ad2b Revert "Fixed mixins case."
• a50b16e Fixed mixins case.
• a640652 Prepared fix of mixins case.
• See full diff in compare view

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[dependabot-preview[bot]]

We've just been alerted that this update fixes a security vulnerability:

Sourced from The GitHub Security Advisory Database.

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.

Workarounds

Implementers who are not able to upgrade may apply DOMPurify recursively to the options structure to filter out malicious markup.

References

• Details on the improved Highcharts security
... (truncated)

Affected versions: ["< 9.0.0"]