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https://issues.apache.org/jira/browse/WICKET-7092?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17803012#comment-17803012
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Martin Tzvetanov Grigorov commented on WICKET-7092:
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I asked for a Jira ticket because "-" and "_" are not really members of base64
encoding.
Reading [https://en.wikipedia.org/wiki/Base64#Variants_summary_table] I see
that in the latest RFC (rfc4648) if one uses url encoder then "+" and "/" are
replaced with "-" and "+" in the alphabet.
Maybe we just have to use the base encoding, not the url encoding at
[https://github.com/apache/wicket/blob/e9461b0d115a7dbf4992596823521f6e038817d9/wicket-core/src/main/java/org/apache/wicket/core/random/ISecureRandomSupplier.java#L60]
?
> Content Security Policy 'Nonces should only use the base64 charset'
> -------------------------------------------------------------------
>
> Key: WICKET-7092
> URL: https://issues.apache.org/jira/browse/WICKET-7092
> Project: Wicket
> Issue Type: Bug
> Components: wicket-core
> Affects Versions: 9.16.0
> Environment: Kali Linux
> Reporter: sundar
> Priority: Minor
> Attachments: image-20240103-092246.png
>
>
> Hi all, I applied a strict content security policy to my application using
> wicket after I tested my application using Kali Linux to check for
> vulnerabilities. The tool provides the report with an info message "Nonces
> should only use the base64 charset" regarding the info message needed to
> configure any properties in CSP. I attached the report screenshotÂ
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