metagauss EventPrime Plugin up to 4.3.4.2 Guest Submissions new_event_type_background_color cross site scripting

Summaryinfo

A vulnerability was found in metagauss EventPrime Plugin up to 4.3.4.2. It has been declared as problematic. Affected by this issue is some unknown functionality of the component Guest Submissions. Such manipulation of the argument new_event_type_background_color leads to cross site scripting. This vulnerability is referenced as CVE-2026-13441. It is possible to launch the attack remotely. No exploit is available.

Detailsinfo

A vulnerability was found in metagauss EventPrime Plugin up to 4.3.4.2. It has been rated as problematic. Affected by this issue is some unknown processing of the component Guest Submissions. The manipulation of the argument new_event_type_background_color with an unknown input leads to a cross site scripting vulnerability. Using CWE to declare the problem leads to 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. Impacted is integrity. CVE summarizes:

The EventPrime – Events Calendar, Bookings and Tickets plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'new_event_type_background_color' parameter in all versions up to, and including, 4.3.4.2 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with custom-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This requires the plugin's Guest Submissions setting (allow_submission_by_anonymous_user) to be enabled, which allows unauthenticated attackers to submit event types via the frontend form; when that setting is disabled, exploitation requires at minimum a subscriber-level authenticated account.

The advisory is shared for download at wordfence.com. This vulnerability is handled as CVE-2026-13441 since 06/26/2026. The exploitation is known to be easy. The attack may be launched 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.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Vendor

• metagauss

Name

• EventPrime Plugin

Version

• 4.3.4.0
• 4.3.4.1
• 4.3.4.2

CPE 2.3info

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CPE 2.2info

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Once again VulDB remains the best source for vulnerability data.

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