CVSS base score
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
What the vulnerability does
The Link Shield plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 0.5.4. This is due to missing or incorrect nonce validation on the link_shield_menu_options() function. This makes it possible for unauthenticated attackers to update settings and inject malicious web scripts via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.
Explanation of Vulnerability in Simple Terms
Link Shield versions 0.5.4 and earlier are vulnerable to cross-site request forgery (CSRF) attacks. An attacker can craft a malicious webpage that, when visited by a logged-in site administrator, performs unwanted actions on the site without the admin's knowledge or consent. The attack requires the victim to visit the attacker's page while authenticated to the target site.
What an attacker can do
Perform unauthorized actions on the site by tricking an authenticated admin into visiting a malicious webpage.
Potential impact on your site
An attacker can modify site settings or data if they trick an admin into clicking a malicious link while logged in.
Conditions required to exploit
The site admin must be logged in and visit a page controlled by the attacker.
Key dates
External resources
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