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CVE-2026-119162

User Submitted Posts <= 20260916 - Unauthenticated Stored DOM-Based Cross-Site Scripting via 'user-submitted-content' Parameter via Block-Comment Shortcode Splitting

The User Submitted Posts – Enable Users to Submit Posts from the Front End plugin for WordPress is vulnerable to Stored DOM-Based Cross-Site Scripting via the 'user-submitted-content' parameter in all versions up to, and including, 20260916 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. On a default installation the submitted post is held as Pending and requires admin approval before the payload is reachable by other visitors; however, if the plugin's "publish immediately" option is enabled, no approval step exists and the stored payload becomes live without any moderator interaction.

CVSS 3.1 · 7.2 High EPSS < 1% KEV · Not listed
Vendors
Specialk Wordpress-extensions
Products
User Submitted Posts – Enable Users To Submit Posts From The Front End User Submitted Posts
CVE-2026-81825

Simple Ajax Chat <= 20260811 - Unauthenticated Stored Cross-Site Scripting

The Simple Ajax Chat – Add a Fast, Secure Chat Box plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Chat Message in all versions up to, and including, <= 20260811 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. The nonce protecting chat message submission is publicly visible on the chat page, rendering it ineffective as an authentication barrier and allowing fully unauthenticated attackers to submit malicious messages that are stored persistently and rendered to all visitors on every page load.

CVSS 3.1 · 7.2 High EPSS < 1% KEV · Not listed
Vendors
Specialk Wordpress
Products
Simple Ajax Chat – Add A Fast, Secure Chat Box Wordpress
CVE-2026-4329

Blackhole for Bad Bots <= 3.8 - Unauthenticated Stored Cross-Site Scripting via User-Agent HTTP Header

The Blackhole for Bad Bots plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the User-Agent HTTP header in all versions up to and including 3.8. This is due to insufficient input sanitization and output escaping. The plugin uses sanitize_text_field() when capturing bot data (which strips HTML tags but does not escape HTML entities like double quotes), then stores the data via update_option(). When an administrator views the Bad Bots log page, the stored data is output directly into HTML input value attributes (lines 75-83) without esc_attr() and into HTML span content without esc_html(). This makes it possible for unauthenticated attackers to inject arbitrary web scripts that execute when an administrator views the Blackhole Bad Bots admin page.

CVSS 3.1 · 7.2 High EPSS < 1% KEV · Not listed
Vendors
Specialk Wordpress
Products
Blackhole For Bad Bots Wordpress
CVE-2026-4278

Simple Download Counter <= 2.3 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'text' Shortcode Attribute

The Simple Download Counter plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'sdc_menu' shortcode in all versions up to, and including, 2.3. This is due to insufficient input sanitization and output escaping on user-supplied shortcode attributes, specifically the 'text' and 'cat' attributes. The 'text' attribute is output directly into HTML content on line 159 without any escaping (e.g., esc_html()). The 'cat' attribute is used unescaped in HTML class attributes on lines 135 and 157 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.

CVSS 3.1 · 6.4 Medium EPSS < 1% KEV · Not listed
Vendors
Specialk Wordpress
Products
Simple Download Counter Wordpress
CVE-2026-2987

Simple Ajax Chat <= 20260217 - Unauthenticated Stored Cross-Site Scripting via 'c'

The Simple Ajax Chat plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'c' parameter in versions up to, and including, 20260217 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.

CVSS 3.1 · 6.1 Medium EPSS < 1% KEV · Not listed
Vendors
Specialk Wordpress
Products
Simple Ajax Chat – Add A Fast, Secure Chat Box Wordpress
CVE-2026-3876

Prismatic <= 3.7.3 - Unauthenticated Stored Cross-Site Scripting via 'prismatic_encoded' Pseudo-Shortcode

The Prismatic plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'prismatic_encoded' pseudo-shortcode in all versions up to, and including, 3.7.3. This is due to insufficient input sanitization and output escaping on user-supplied attributes within the 'prismatic_decode' function. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page by submitting a comment containing a crafted 'prismatic_encoded' pseudo-shortcode.

CVSS 3.1 · 7.2 High EPSS < 1% KEV · Not listed
Vendors
Specialk Wordpress
Products
Prismatic Wordpress
CVE-2026-0608

Head Meta Data <= 20251118 - Authenticated (Contributor+) Stored Cross-Site Scripting via Post Meta

The Head Meta Data plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'head-meta-data' post meta field in all versions up to, and including, 20251118 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.

CVSS 3.1 · 6.4 Medium EPSS < 1% KEV · Not listed
Vendors
Specialk Wordpress
Products
Head Meta Data Wordpress
CVE-2026-2126

User Submitted Posts <= 20260113 - Incorrect Authorization to Unauthenticated Category Restriction Bypass via 'user-submitted-category' Parameter

The User Submitted Posts – Enable Users to Submit Posts from the Front End plugin for WordPress is vulnerable to Incorrect Authorization in all versions up to, and including, 20260113. This is due to the `usp_get_submitted_category()` function accepting user-submitted category IDs from the POST body without validating them against the admin-configured allowed categories stored in `usp_options['categories']`. This makes it possible for unauthenticated attackers to assign submitted posts to arbitrary categories, including restricted ones, by crafting a direct POST request with manipulated `user-submitted-category[]` values, bypassing the frontend category restrictions.

CVSS 3.1 · 5.3 Medium EPSS < 1% KEV · Not listed
Vendors
Specialk Wordpress
Products
User Submitted Posts – Enable Users To Submit Posts From The Front End Wordpress