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 Alpha Blocks plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the ‘alpha_block_css’ parameter in all versions up to, and including, 1.5.0 due to insufficient input sanitization and output escaping. 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
Alpha Blocks versions 1.5.0 and earlier contain a stored cross-site scripting (XSS) vulnerability. An attacker with low-level user privileges can inject malicious scripts that execute in other users' browsers when they view affected content. The vulnerability has scope change, meaning the impact extends beyond the vulnerable component itself.
What an attacker can do
Inject malicious scripts that run in other users' browsers and steal their session data or perform actions on their behalf.
Potential impact on your site
Any user with low-level access (subscriber, contributor, etc.) can compromise other users' accounts or deface site content.
Conditions required to exploit
Attacker must have a low-privilege user account on the site; no user interaction required from victims.
Key dates
External resources
Related vulnerabilities
