CVSS base score
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
What the vulnerability does
The Gallagher Website Design plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's login_link shortcode in all versions up to, and including, 2.6.4 due to insufficient input sanitization and output escaping on the 'prefix' attribute. 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.
Explanation of Vulnerability in Simple Terms
Gallagher Website Design versions 2.6.4 and earlier contain a cross-site scripting (XSS) vulnerability that allows authenticated users to inject malicious scripts. The vulnerability has a changed scope, meaning the impact can extend beyond the vulnerable component itself. An attacker with low-level credentials can inject code that affects other users or site functionality without requiring user interaction.
What an attacker can do
Inject malicious scripts that execute in other users' browsers or affect site functionality.
Potential impact on your site
Authenticated users with low privileges can inject scripts affecting other users or site behavior.
Conditions required to exploit
Attacker must have low-level authenticated access to the site.
Key dates
External resources
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