CVE-2019-18834

Name: CVE-2019-18834
Creator: NVD / NIST
Published: 2020-07-23T20:15:11.507+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.1/10EPSS 1.63%

Last modified Jun 17, 2026

CVE-2019-18834 is a medium-severity vulnerability rated 6.1/10 on the CVSS scale. 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.. EPSS estimates a 1.63% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

6.1/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

EPSS Probability

1.63%

73.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions
Woocommerce	Subscriptions	< 2.6.3

References

https://woocommerce.com/products/woocommerce-subscriptions/Product, Vendor Advisory
https://www.precursorsecurity.com/blogThird Party Advisory
https://www.precursorsecurity.com/blog/woocommerce-subscriptions-persistent-xss-cve-2019-18834Exploit, Third Party Advisory
https://woocommerce.com/products/woocommerce-subscriptions/Product, Vendor Advisory
https://www.precursorsecurity.com/blogThird Party Advisory
https://www.precursorsecurity.com/blog/woocommerce-subscriptions-persistent-xss-cve-2019-18834Exploit, Third Party Advisory

Timeline

Published: Jul 23, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-18834?

How severe is CVE-2019-18834?

CVE-2019-18834 has a CVSS score of 6.1/10 (MEDIUM severity). The EPSS model estimates a 1.63% probability of exploitation in the next 30 days.

How do I fix CVE-2019-18834?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2019-18834?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST