[wp-trac] [WordPress Trac] #45067: Add CSS URL sanitization to kses.

[WordPress Trac]

#45067: Add CSS URL sanitization to kses.
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 Reporter:  peterwilsoncc               |       Owner:  (none)
     Type:  enhancement                 |      Status:  new
 Priority:  normal                      |   Milestone:  5.0
Component:  Editor                      |     Version:
 Severity:  normal                      |  Resolution:
 Keywords:  has-patch needs-unit-tests  |     Focuses:
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Changes (by peterwilsoncc):

 * keywords:  needs-patch => has-patch needs-unit-tests


Comment:

 In [attachment:"45067.diff"]:

 * Parses URLs in `style` attribute following @pento's
 [https://github.com/WordPress/gutenberg/issues/2539#issuecomment-427717063
 comment on the related gutenberg ticket]
 * Adds `background-image` as whitelisted CSS for inline styles
 * Needs unit tests, several of them

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Ticket URL: <https://core.trac.wordpress.org/ticket/45067#comment:1>
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