CVE-2026-8895
Deferred Deferred - Pending Action

Stored XSS in KK Blog Card WordPress Plugin

Publication date: 2026-06-09

Last updated on: 2026-06-09

Assigner: Wordfence

Description
The kk blog card plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's 'blog-card' shortcode in all versions up to, and including, 1.3. This is due to insufficient input sanitization and output escaping on the shortcode's 'href' and 'type' attributes, which are concatenated directly into HTML attribute contexts in the shortcode callback registered in kk-blog-card-shortcode.php. 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
2026-06-09
Last Modified
2026-06-09
Generated
2026-06-29
AI Q&A
2026-06-09
EPSS Evaluated
2026-06-28
NVD
CVE-2026-8895
EUVD
EUVD-2026-35317

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
kk_blog_card kk_blog_card_plugin to 1.3 (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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Impact Analysis

This vulnerability allows attackers with contributor-level access to inject arbitrary scripts into pages, which can execute in the browsers of users who visit those pages.

Such script execution can lead to theft of user credentials, session hijacking, defacement, or other malicious actions impacting the website's users and integrity.

Because the attack requires authenticated access, it may be exploited by insiders or compromised accounts.

Executive Summary

The kk blog card plugin for WordPress has a Stored Cross-Site Scripting (XSS) vulnerability in its 'blog-card' shortcode in all versions up to and including 1.3.

This vulnerability arises because the plugin does not properly sanitize or escape input for the 'href' and 'type' attributes, which are directly inserted into HTML attributes.

As a result, authenticated users with contributor-level access or higher can inject malicious scripts that execute whenever someone views the affected page.

Detection Guidance

This vulnerability involves Stored Cross-Site Scripting (XSS) via the 'blog-card' shortcode's 'href' and 'type' attributes in the kk blog card plugin for WordPress. Detection involves identifying instances where these shortcode attributes contain malicious scripts.

You can scan your WordPress database or content for the presence of the 'blog-card' shortcode with suspicious or script-injected values in the 'href' or 'type' attributes.

  • Use a database query to search for the shortcode in posts, for example (replace wp_posts with your table prefix):
  • SELECT ID, post_content FROM wp_posts WHERE post_content LIKE '%[blog-card%href=%' OR post_content LIKE '%[blog-card%type=%';
  • Look for suspicious script tags or unusual characters in the results.

Additionally, monitoring HTTP responses for unexpected script injections on pages using this shortcode can help detect exploitation.

Mitigation Strategies

To mitigate this vulnerability, immediately update the kk blog card plugin to a version later than 1.3 where the issue is fixed.

If an update is not immediately available, restrict contributor-level and above users from adding or editing content with the 'blog-card' shortcode until a patch is applied.

Review and sanitize existing content containing the 'blog-card' shortcode to remove any injected scripts.

Implement Web Application Firewall (WAF) rules to block attempts to inject scripts via the vulnerable shortcode attributes.

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