What’s Vulnerable › Vulnerabilities

CVE-2017-18577

• 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: 2019-08-22 · updated 2026-06-17
• Weakness: CWE-79

Description

The mailchimp-for-wp plugin before 4.1.8 for WordPress has XSS via the return value of add_query_arg.

Affected products

• ibericode MC4WP: Mailchimp for WordPress: before 4.1.8 — fixed in 4.1.8

How to fix

Upgrade to a fixed version: ibericode MC4WP: Mailchimp for WordPress 4.1.8. Check the vendor advisory for mitigations.

References

• https://wordpress.org/plugins/mailchimp-for-wp/#developers
• https://wordpress.org/plugins/mailchimp-for-wp/#developers

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