MailChimp for WordPress <= 4.1.6 - Authenticated Cross-Site Scripting (XSS)



Description
Usage of the output of add_query_arg() without escaping in various places in the WordPress Backend leads to reflected XSS vulnerability. 
Proof of Concept
URL/wp-admin/admin.php?page=mailchimp-for-wp-integrations&"><script>alert(1)</script>

Affects Plugin

fixed in version 4.1.7

References

URL https://plugins.trac.wordpress.org/changeset/1726656/mailchimp-for-wp
URL https://www.ripstech.com/php-security-calendar-2018/#day-12

Classification

Type XSS
OWASP Top 10 A3: Cross-Site Scripting (XSS)
CWE CWE-79

Miscellaneous

Original Researcher RIPS Technologies (Karim El Ouerghemmi)
Submitter Karim El Ouerghemmi
Submitter Website https://ripstech.com
Views 1349
Verified No
WPVDB ID 9026

Timeline

Publicly Published 2017-09-08 (over 1 year ago)
Added 2018-02-22 (10 months ago)
Last Updated 2018-12-13 (4 days ago)

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