What the vulnerability does
01Description
The ITERAS plugin for WordPress is vulnerable to Stored Cross-Site Scripting via multiple shortcodes (iteras-ordering, iteras-signup, iteras-paywall-login, iteras-selfservice) in all versions up to and including 1.8.2. This is due to insufficient input sanitization and output escaping in the combine_attributes() function. The function directly concatenates shortcode attribute values into JavaScript code within <script> tags using double-quoted string interpolation (line 489: '"'.$key.'": "'.$value.'"') without any escaping. An attacker can break out of the JavaScript string context by including a double-quote character in a shortcode attribute value and inject arbitrary JavaScript. 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
02Summary
ITERAS versions up to 1.8.2 contain a cross-site scripting (XSS) vulnerability that allows authenticated users to inject malicious scripts. The vulnerability has changed scope, meaning injected code can affect other users or components beyond the vulnerable input field. An attacker with low-level credentials can exploit this without user interaction to compromise site integrity and read sensitive data.
What an attacker can do
03Attacker Capabilities
Inject malicious scripts that execute in other users' browsers and affect other site components.
Potential impact on your site
04Site Impact
Authenticated attackers can steal session tokens, modify page content, or redirect users to malicious sites.
Conditions required to exploit
05Prerequisites
Attacker must have a low-privilege account on the site; no user interaction required.
Key dates
06Disclosure timeline
April 24, 2026
CVE published
April 24, 2026
Record updated
