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 Envira Gallery for WordPress plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'justified_gallery_theme' parameter in all versions up to, and including, 1.12.3 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with Author-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
Envira Gallery versions up to 1.12.3 contain a cross-site scripting vulnerability that allows authenticated users to inject malicious scripts affecting other site visitors. The vulnerability exists in the plugin's handling of user input and can impact site confidentiality and integrity. Site administrators should update to a version newer than 1.12.3 to remediate this issue.
What an attacker can do
Inject malicious scripts that execute in other users' browsers when they view affected gallery content.
Potential impact on your site
Authenticated attackers can deface galleries, steal visitor data, or redirect users to malicious sites.
Conditions required to exploit
Attacker must have a low-privilege account (e.g., contributor or subscriber) on the WordPress site.
Key dates
External resources
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