EUVD-2026-12833CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
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Description
The Code Embed plugin for WordPress is vulnerable to Stored Cross-Site Scripting via custom field meta values in all versions up to, and including, 2.5.1. This is due to the plugin's sanitization function `sec_check_post_fields()` only running on the `save_post` hook, while WordPress allows custom fields to be added via the `wp_ajax_add_meta` AJAX endpoint without triggering `save_post`. The `ce_filter()` function then outputs these unsanitized meta values directly into page content without 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.
Analysis
The Code Embed plugin for WordPress (versions up to 2.5.1) contains a stored cross-site scripting vulnerability that allows authenticated attackers with Contributor-level access or higher to inject arbitrary JavaScript into pages through custom field meta values. The vulnerability exists because the plugin's sanitization function only runs during post saves, while WordPress AJAX endpoints can add meta fields without triggering sanitization, and the plugin then outputs these unsanitized values directly without HTML escaping. …
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Remediation
Within 30 days: Identify affected systems running for WordPress is vulnerable to Stored Cross-Site Scripting v and apply vendor patches as part of regular patch cycle. Verify Content-Security-Policy and output encoding.
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