CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
EPSS
Percentile
14.0%
Description The All in One SEO – Best WordPress SEO Plugin – Easily Improve SEO Rankings & Increase Traffic plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin’s shortcode(s) insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
As a contributor, add the following shortcode to a post:
[aioseo_html_sitemap label_tag="img src onerror=alert(/XSS-sitemap/)"]
The XSS will be triggered when anyone access the post dashboard (/wp-admin/edit.php?post_type=post)