CVSS base score
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L
What the vulnerability does
Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Ultimate Blocks Ultimate Blocks – Gutenberg Blocks Plugin allows Stored XSS.This issue affects Ultimate Blocks – Gutenberg Blocks Plugin: from n/a through 3.1.9.
Explanation of Vulnerability in Simple Terms
Ultimate Blocks plugin versions up to 3.1.9 contain a stored cross-site scripting (XSS) vulnerability. An authenticated user with low privileges can inject malicious scripts into block content. When another user views the affected page, the script executes in their browser, potentially compromising their session or stealing data. The vulnerability requires user interaction to trigger.
What an attacker can do
Inject malicious scripts that execute when other users view the affected page, potentially stealing session data or performing actions on their behalf.
Potential impact on your site
Compromised user sessions, data theft, or unauthorized actions performed by attackers impersonating legitimate users on your site.
Conditions required to exploit
Attacker must have a low-privilege WordPress account (e.g., contributor or editor) and the victim must view the page containing the malicious block.
Key dates
External resources
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