All in One SEO – Best WordPress SEO Plugin – Easily Improve SEO Rankings & Increase Traffic < 4.6.1.1 - Contributor+ Stored Cross-Site Scripting via Shortcode

2024-04-2900:00:00

wpscan.com

135

wordpress

seo

vulnerability

cross-site scripting

shortcode

plugin

CVSS3

6.4

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%

JSON

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.

PoC

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)