What’s Vulnerable › Vulnerabilities

CVE-2015-9372

• Severity: medium (CVSS 6.1 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.9% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2019-08-28 · updated 2026-06-17
• Weakness: CWE-79

Description

Membership Add-on for iThemes Exchange before 1.3.0 for WordPress has XSS via add_query_arg() and remove_query_arg().

Affected products

• iThemes Membership: before 1.3.0 — fixed in 1.3.0

How to fix

Upgrade to a fixed version: iThemes Membership 1.3.0. Check the vendor advisory for mitigations.

References

• https://blog.sucuri.net/2015/04/security-advisory-xss-vulnerability-affecting-multiple-wordpress-plugins.html
• https://ithemes.com/coordinated-wordpress-plugin-security-update/
• https://blog.sucuri.net/2015/04/security-advisory-xss-vulnerability-affecting-multiple-wordpress-plugins.html
• https://ithemes.com/coordinated-wordpress-plugin-security-update/

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