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.
CVE-2026-4078 is a medium severity with CVSS 6.4 Stored Cross-Site Scripting issue affecting the Plugin ITERAS. It affects Versions up to 1.8.2 and is fixed in 1.8.3.
CVE-2026-4078 is tracked for the Plugin ITERAS as medium severity with CVSS 6.4. The affected range is Versions up to 1.8.2. Update ITERAS to 1.8.3 or newer where that version is compatible with the site.
| Software Type | Plugin |
|---|---|
| Software Slug |
iteras
View on wordpress.org
|
| CVE | CVE-2026-4078 |
| Patched Versions |
1.8.3
|
| Affected Versions |
Versions up to 1.8.2
|
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