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4 vulnerabilities found for Post Grid Gutenberg Blocks – PostX by wpxpo

CVE-2026-96840 (GCVE-0-2026-96840)
Vulnerability from cvelistv5
Published
2026-10-10 06:40
Modified
2026-10-11 12:23
Severity ?
7.2 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
CWE
  • CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Summary
The Post Grid Gutenberg Blocks – PostX plugin for WordPress is vulnerable to Stored Cross-Site Scripting via display_name User Field in all versions up to, and including, 5.1.0 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. WordPress core's pre_user_display_name filter encodes &, <, and > but leaves double-quotes intact (ENT_NOQUOTES), allowing a Subscriber-level user to store a double-quote in their display_name via /wp-admin/profile.php that subsequently breaks out of the alt="" attribute at Archive_Title.php:144.
References
Impacted products
Vendor Product Version
wpxpo Post Grid Gutenberg Blocks – PostX Version: 0   ≤ 5.1.0
 Create a notification for this product.
Show details on NVD website

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CVE-2026-5158 (GCVE-0-2026-5158)
Vulnerability from cvelistv5
Published
2026-08-06 11:29
Modified
2026-08-06 12:22
Severity ?
6.4 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
CWE
  • CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Summary
The Post Grid Gutenberg Blocks for News, Magazines, Blog Websites – PostX plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'inputPlaceHolder' parameter in all versions up to, and including, 5.0.13 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.
References
Impacted products
Vendor Product Version
wpxpo Post Grid Gutenberg Blocks – PostX Version: 0   ≤ 5.0.13
 Create a notification for this product.
Show details on NVD website

To clipboard 

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CVE-2026-15100 (GCVE-0-2026-15100)
Vulnerability from cvelistv5
Published
2026-07-24 02:31
Modified
2026-07-24 14:23
Severity ?
6.4 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
CWE
  • CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Summary
The Post Grid Gutenberg Blocks – PostX plugin for WordPress is vulnerable to Stored Cross-Site Scripting via 'searchnoresult' Block Attribute in all versions up to, and including, 5.0.32 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. This is particularly concerning in a cross-privilege scenario where a Contributor creates a pending or draft post containing the malicious block attribute, which then executes arbitrary JavaScript in the browser session of an Editor or Administrator who previews that post.
References
Impacted products
Vendor Product Version
wpxpo Post Grid Gutenberg Blocks – PostX Version: 0   ≤ 5.0.32
 Create a notification for this product.
Show details on NVD website

To clipboard 

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CVE-2026-13253 (GCVE-0-2026-13253)
Vulnerability from cvelistv5
Published
2026-07-09 06:52
Modified
2026-07-09 17:33
Severity ?
6.4 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
CWE
  • CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Summary
The Ultimate Post plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'moreResultsText' block attribute of the ultimate-post/advanced-search block in versions up to and including 5.0.31. This is due to insufficient input sanitization and output escaping in the Advanced_Search::content() render callback: the attribute value is filtered with wp_kses(), which strips disallowed HTML tags but does NOT escape HTML special characters such as double quotes in plain text, and the result is then concatenated directly into the data-viewmoretext HTML attribute without esc_attr(). 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.
References
Impacted products
Vendor Product Version
wpxpo Post Grid Gutenberg Blocks – PostX Version: 0   ≤ 5.0.31
 Create a notification for this product.
Show details on NVD website

To clipboard 

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