wp_update_post and base64 images

Hi,

I’m trying to add a base64 image to a WordPress page with wp_update_post().

The string I’m trying to insert looks like:

<img src="data:image/jpeg;base64,...." alt="foo" class="bar">

Now wp_update_post seems to truncate the colon and anything before it until the double quote (ie: ‘date:’), resulting in:

<img src="image/jpeg;base64,...." alt="foo" class="bar">

Thus breaking my image. However, this does work if I manually update the page.

I’ve found some people having similar problems with styles caused by KSES, but I can’t seem to figure out a solution for this specific issue.

Does anyone have a suggestion?