CVE-2019-18834 — Persistent XSS in the WooCommerce Subscriptions plugin before 2

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.

01What is this vulnerability?

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.

02Affected products

Vendor	Product	Versions
n	a / n/a	n/a

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2020-07-23T19:42:47.000Z
• Last modified: 2024-08-05T02:02:39.673Z

09References

• www.precursorsecurity.com — https://www.precursorsecurity.com/blog
• woocommerce.com — https://woocommerce.com/products/woocommerce-subscriptions/
• www.precursorsecurity.com — https://www.precursorsecurity.com/blog/woocommerce-subscriptions-persistent-xss-…