What is CVE-2025-11821?

CVE-2025-11821 is a medium-severity vulnerability in Elvismdev Woocommerce – Products By Custom Tax, classified under Cross-site Scripting. CVSS score: 6.4/10. Published 2025-11-11.

How severe is CVE-2025-11821?

Medium severity. CVSS v3 base score is 6.4 out of 10.

XSS in Elvismdev Woocommerce – Products By Custom Tax

CVE-2025-11821

The Woocommerce – Products By Custom Tax plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'woo_products_custom_tax' shortcode in all versions up to, and including, 2.2. This is due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.002 (11.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N.

Affected products

Elvismdev Woocommerce – Products By Custom Tax — versions 0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

Frequently asked questions

What is CVE-2025-11821?: CVE-2025-11821 is a medium-severity vulnerability in Elvismdev Woocommerce – Products By Custom Tax, classified under Cross-site Scripting. CVSS score: 6.4/10. Published 2025-11-11.
How severe is CVE-2025-11821?: Medium severity. CVSS v3 base score is 6.4 out of 10.