ITERAS Plugin up to 1.8.2 on WordPress Shortcode combine_attributes cross site scripting

Summaryinfo

A vulnerability was found in ITERAS Plugin up to 1.8.2 on WordPress and classified as problematic. This affects the function combine_attributes of the component Shortcode Handler. The manipulation results in cross site scripting. This vulnerability was named CVE-2026-4078. The attack may be performed from remote. There is no available exploit. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, was found in ITERAS Plugin up to 1.8.2 on WordPress. Affected is the function combine_attributes of the component Shortcode Handler. The manipulation with an unknown input leads to a cross site scripting vulnerability. CWE is classifying the issue as CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. This is going to have an impact on integrity. CVE summarizes:

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 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.

The weakness was presented by Muhammad Yudha. The advisory is shared for download at wordfence.com. This vulnerability is traded as CVE-2026-4078 since 03/12/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. Successful exploitation requires user interaction by the victim. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1059.007.

Upgrading to version 1.8.2 eliminates this vulnerability.

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Productinfo

Type

• WordPress Plugin

Name

• ITERAS Plugin

Version

• 1.8.0
• 1.8.1
• 1.8.2

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CPE 2.2info

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