The AMP for WP – Accelerated Mobile Pages plugin for WordPress is vulnerable to Stored Cross-Site Scripting via 'headline-*' Shortcode Attribute in all versions up to, and including, 1.1.17 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. A Subscriber-level user can store a malicious shortcode in their biographical info field; because WordPress core's wp_filter_kses() only strips HTML tags and not shortcode syntax, and because AMP content sanitizers run before do_shortcode() processes the archive description, the synthesized markup is never post-sanitized.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
Low
Partial data leak
Integrity
Low
Partial data modification
Availability
None
No disruption
CVSS Vector v3.1
Weakness Type (CWE)
Vulnerable Products
mohammed_kaludi:amp for wp – accelerated mobile pages
References 5
https://plugins.trac.wordpress.org/browser/accelerated-mobile-pages/tags/1.1.17…
security@wordfence.com
https://plugins.trac.wordpress.org/browser/accelerated-mobile-pages/tags/1.1.17…
security@wordfence.com
https://plugins.trac.wordpress.org/browser/accelerated-mobile-pages/tags/1.1.17…
security@wordfence.com
https://plugins.trac.wordpress.org/changeset?reponame=&old=3722863%40accelerate…
security@wordfence.com
https://www.wordfence.com/threat-intel/vulnerabilities/id/be16349f-31aa-41b8-a4…
security@wordfence.com