What’s Vulnerable › Vulnerabilities

CVE-2019-18834

• Severity: medium (CVSS 6.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.6% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2020-07-23 · updated 2026-06-17
• Weakness: CWE-79

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.

Affected products

• WooCommerce Subscriptions: before 2.6.3 — fixed in 2.6.3

How to fix

Upgrade to a fixed version: WooCommerce Subscriptions 2.6.3. Check the vendor advisory for mitigations.

References

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

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