CVE-2026-4859
Received Received - Intake
Stored XSS in SP Blog Designer WordPress Plugin

Publication date: 2026-05-12

Last updated on: 2026-05-12

Assigner: Wordfence

Description
The SP Blog Designer plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'design' attribute of the `wpsbd_post_carousel` shortcode in all versions up to, and including, 1.0.0 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
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Meta Information
Published
2026-05-12
Last Modified
2026-05-12
Generated
2026-06-21
AI Q&A
2026-05-12
EPSS Evaluated
2026-06-20
NVD
CVE-2026-4859
EUVD
EUVD-2026-29395
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
wp_blog_designer blog_designer to 1.0.0 (inc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-79 The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.
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Executive Summary

The SP Blog Designer plugin for WordPress has a vulnerability known as Stored Cross-Site Scripting (XSS) in its 'design' attribute of the wpsbd_post_carousel shortcode. This vulnerability exists in all versions up to and including 1.0.0 because the plugin does not properly sanitize input or escape output.

Authenticated users with Contributor-level access or higher can exploit this flaw to inject malicious web scripts into pages. These scripts will then execute whenever any user views the infected page.

Impact Analysis

This vulnerability can allow attackers with Contributor-level access to inject malicious scripts that execute in the browsers of users who visit the affected pages.

  • It can lead to theft of user credentials or session tokens.
  • It can enable unauthorized actions on behalf of users.
  • It may result in defacement or manipulation of website content.
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