[wp-trac] [WordPress Trac] #48710: PDF uploads are treated like images: empty alt attribute and PHP notices

[WordPress Trac]

#48710: PDF uploads are treated like images: empty alt attribute and PHP notices
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 Reporter:  worddean      |       Owner:  joedolson
     Type:  defect (bug)  |      Status:  accepted
 Priority:  normal        |   Milestone:  6.4
Component:  Media         |     Version:
 Severity:  normal        |  Resolution:
 Keywords:  needs-patch   |     Focuses:  accessibility
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Comment (by joedolson):

 The root cause here is that the uploader isn't getting an accept attribute
 that matches the current collection filters, so you can upload file types
 that aren't a match for what you can use in a given context.

 The situation where a PDF is treated like an image is only caused because
 it's possible to do this; if we properly prevent uploads in these
 inappropriate places, then we don't have this issue.

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Ticket URL: <https://core.trac.wordpress.org/ticket/48710#comment:40>
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