[wp-trac] [WordPress Trac] #40737: Script tags inside unclosed HTML comment in value passed to WP_Script->localize() breaks page

WordPress Trac noreply at wordpress.org
Thu Jan 15 11:12:04 UTC 2026


#40737: Script tags inside unclosed HTML comment in value passed to
WP_Script->localize() breaks page
---------------------------+-------------------------
 Reporter:  rmarscher      |       Owner:  (none)
     Type:  defect (bug)   |      Status:  closed
 Priority:  normal         |   Milestone:
Component:  Script Loader  |     Version:
 Severity:  normal         |  Resolution:  duplicate
 Keywords:  has-patch      |     Focuses:  javascript
---------------------------+-------------------------

Comment (by jonsurrell):

 In [changeset:"61485" 61485]:
 {{{
 #!CommitTicketReference repository="" revision="61485"
 Script Loader: Use HTML API to generate SCRIPT tags.

 Script tags have complicated and unintuitive parsing rules that make them
 difficult to author correctly. The HTML API automatically escapes script
 tag contents as necessary and will set attributes correctly. Using the
 HTML API to generate SCRIPT tags improves safety when working with SCRIPT
 tags, resolving a class of issues that have manifested repeatedly.

 Changeset [61418] applied the HTML API to generate style tags in a similar
 way.

 Developed in https://github.com/WordPress/wordpress-develop/pull/10639.

 Props jonsurrell, dmsnell, westonruter.
 Fixes #64500. See #64419, #40737, #62797, #63851, #51159.
 }}}

-- 
Ticket URL: <https://core.trac.wordpress.org/ticket/40737#comment:4>
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