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https://issues.apache.org/jira/browse/SPARK-30655?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17298005#comment-17298005
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Peter Toth commented on SPARK-30655:
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[~d.clarke], it looks like you already fixed this in 
[https://github.com/apache/spark/pull/27370|https://github.com/apache/spark/pull/27370].
 Shall we close this ticket?

> Update WebUI Bootstrap to 4.4.1
> -------------------------------
>
>                 Key: SPARK-30655
>                 URL: https://issues.apache.org/jira/browse/SPARK-30655
>             Project: Spark
>          Issue Type: Improvement
>          Components: Web UI
>    Affects Versions: 3.1.0
>            Reporter: Dale Clarke
>            Priority: Major
>
> Spark is using an older version of Bootstrap (v. 2.3.2) for the Web UI pages. 
>  Bootstrap 2.x was moved to EOL in Aug 2013 and Bootstrap 3.x was moved to 
> EOL in July 2019 ([https://github.com/twbs/release)].  Older versions of 
> Bootstrap are also getting flagged in security scans for various CVEs:
>  * [https://snyk.io/vuln/SNYK-JS-BOOTSTRAP-72889]
>  * [https://snyk.io/vuln/SNYK-JS-BOOTSTRAP-173700]
>  * [https://snyk.io/vuln/npm:bootstrap:20180529]
>  * [https://snyk.io/vuln/npm:bootstrap:20160627]
> I haven't validated each CVE, but it would probably be good practice to 
> resolve any potential issues and get on a supported release.
> The bad news is that there have been quite a few changes between Bootstrap 2 
> and Bootstrap 4.  I've tried updating the library, refactoring/tweaking the 
> CSS and JS to maintain a similar appearance and functionality, and testing 
> the documentation.  As with the ticket created for the outdated Bootstrap 
> version in the docs (SPARK-30654), this is a fairly large change so I'm sure 
> additional testing and fixes will be needed.



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