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Description

The King Addons for Elementor plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'form_page_id' parameter in versions up to, and including, 51.1.62 This is due to insufficient input sanitization in the add_to_submissions() function, which applies sanitize_text_field() (which preserves double-quote characters) before storing the value in post meta, combined with missing output escaping in the king_addons_submissions_custom_column_content() function, which concatenates the stored value into an HTML href attribute via admin_url() without wrapping the result in esc_url(). This makes it possible for authenticated attackers, with subscriber-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

PUBLISHED Reserved 2026-07-09 | Published 2026-07-10 | Updated 2026-07-10 | Assigner Wordfence




MEDIUM: 6.4CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

Problem types

CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Product status

Default status
unaffected

Any version
affected

Timeline

2026-06-15:Disclosed

Credits

Naoya Takahashi (nakko) finder

References

www.wordfence.com/...-69b3-42fb-aeba-c3a24280547f?source=cve

plugins.trac.wordpress.org/...lpers/View_Submissions_Pro.php

plugins.trac.wordpress.org/.../helpers/Create_Submission.php

plugins.trac.wordpress.org/.../helpers/Upload_Email_File.php

plugins.trac.wordpress.org/...lpers/View_Submissions_Pro.php

plugins.trac.wordpress.org/.../helpers/Create_Submission.php

plugins.trac.wordpress.org/.../helpers/Upload_Email_File.php

plugins.trac.wordpress.org/...th=%2Fking-addons/tags/51.1.63

plugins.trac.wordpress.org/...elpers%2FCreate_Submission.php

plugins.trac.wordpress.org/...ers%2FView_Submissions_Pro.php

cve.org (CVE-2026-15284)

nvd.nist.gov (CVE-2026-15284)

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