The RSS Aggregator – RSS Import, News Feeds, Feed to Post, and Autoblogging plugin for WordPress is vulnerable to DOM-Based Cross-Site Scripting via postMessage in all versions up to, and including, 5.0.11. This is due to the plugin's admin-shell.js registering a global message event listener without origin validation (missing event.origin check) and directly passing user-controlled URLs to window.open() without URL scheme validation. This makes it possible for unauthenticated attackers to execute arbitrary JavaScript in the context of an authenticated administrator's session by tricking them into visiting a malicious website that sends crafted postMessage payloads to the plugin's admin page.
Attack Parameters
Attack Vector
Network
Атака возможна удалённо
Attack Complexity
Low
Легко эксплуатировать
Privileges Required
None
Права не нужны
User Interaction
Required
Нужно действие пользователя
Impact Assessment
Confidentiality
Low
Частичная утечка данных
Integrity
Low
Частичная модификация данных
Availability
None
Нет нарушения работы
CVSS Vector v3.1
Weakness Type (CWE)
References 6
https://plugins.trac.wordpress.org/browser/wp-rss-aggregator/tags/5.0.10/core/j…
security@wordfence.com
https://plugins.trac.wordpress.org/browser/wp-rss-aggregator/tags/5.0.10/core/j…
security@wordfence.com
https://plugins.trac.wordpress.org/browser/wp-rss-aggregator/trunk/core/js/admi…
security@wordfence.com
https://plugins.trac.wordpress.org/browser/wp-rss-aggregator/trunk/core/js/admi…
security@wordfence.com
https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&ne…
security@wordfence.com
https://www.wordfence.com/threat-intel/vulnerabilities/id/311960e7-c4b4-4638-98…
security@wordfence.com