mediumCVE-2026-12924

Eventin <= 4.1.15 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'etn_faq_content' Parameter

Q: What is affected by CVE-2026-12924?

Eventin – Event Calendar, Event Registration, Tickets & Booking (AI Powered) versions listed as affected should be reviewed: *-4.1.15.

Q: What should I fix first?

Start with internet-facing sites, admin panels, login flows, plugins, themes, modules, packages, and systems that process user-controlled input or sensitive data.

Q: How do I confirm the fix worked?

Apply the patched version or mitigation, clear caches where relevant, retest the affected workflow, and run a new Fixnx scan to verify public website exposure signals.

Q: How are Fixnx security risk categories chosen?

Fixnx keeps one canonical risk page and assigns only broad, relevant categories such as ecosystem, technology area, or vulnerability class.

The Eventin – Event Calendar, Event Registration, Tickets & Booking (AI Powered) plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'etn_faq_content' parameter in all versions up to, and including, 4.1.15 due to insufficient input sanitization and output escaping. 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.

ProductEventin – Event Calendar, Event Registration, Tickets & Booking (AI Powered)

CVSS6.4

EPSS0.00206

UpdatedJuly 13, 2026

Quick answer

Eventin – Event Calendar, Event Registration, Tickets & Booking (AI Powered) should be reviewed and updated if it matches the affected versions. The recommended fix is to apply the vendor-supported patched version or the mitigation steps below, then retest the public website with Fixnx.

Who is affected

Affected versions

*-4.1.15

Fixed versions

4.1.16

How to fix it

Eventin – Event Calendar, Event Registration, Tickets & Booking (AI Powered) is affected by CVE-2026-12924, a cross-site scripting issue in versions up to 4.1.15. Wordfence lists the official remediation as updating to version 4.1.16, or a newer patched version. Prioritize internet-facing WordPress sites, sites with public registration, customer portals, support, booking, import/export, page-builder, and admin workflows where the vulnerable feature is enabled. If immediate patching is not possible, disable the affected plugin or feature, restrict access, and monitor for exploitation until the update is installed.

Inventory every WordPress site that has Eventin – Event Calendar, Event Registration, Tickets & Booking (AI Powered) installed, including production, staging, multisite, client, WooCommerce, support, booking, and content-management environments.
Confirm the installed Eventin – Event Calendar, Event Registration, Tickets & Booking (AI Powered) version and compare it with the affected range from the Wordfence advisory.
Update Eventin – Event Calendar, Event Registration, Tickets & Booking (AI Powered) to version 4.1.16, or to a newer vendor-supported patched version from the official WordPress update channel.
If the update cannot be applied immediately, disable Eventin – Event Calendar, Event Registration, Tickets & Booking (AI Powered) or the affected feature and restrict access with roles, authentication, WAF rules, or temporary route blocking.
Review user-generated content, forms, widgets, saved plugin settings, comments, profiles, templates, support tickets, page-builder output, and WooCommerce/customer pages for injected scripts or unexpected HTML.
Rotate administrator sessions, API keys, webhook secrets, payment or integration tokens, and affected credentials if logs or content review suggest compromise.
Clear WordPress, object, CDN, page-builder, security plugin, WooCommerce, booking/support plugin, and browser caches after patching so vulnerable assets or stored payloads are not served.

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Verify the fix

Confirm the running Eventin – Event Calendar, Event Registration, Tickets & Booking (AI Powered) version is version 4.1.16 or newer, and record the patched version in the remediation ticket.
Verify the affected fields, widgets, forms, profile data, ticket content, page-builder output, or settings now sanitize input and escape output instead of rendering executable scripts.
Review web server, WordPress, security plugin, WAF, database, WooCommerce, booking/support, and application logs for exploitation attempts before and after the fix.
Retest normal visitor, subscriber, customer, editor, administrator, checkout, form, API, booking, support ticket, import/export, backup/restore, snippet, or integration workflows to confirm expected behavior still works.
Run a fresh Fixnx scan and document the public exposure state, patched version, log review, and any cleanup evidence.

Related categories

WordPress Cross-site Scripting

Trusted references

Wordfence advisoryWordfence, NVD Source advisoryWordfence, NVD Source advisoryWordfence, NVD Source advisoryWordfence, NVD Source advisoryWordfence, NVD Source advisoryWordfence, NVD Source advisoryWordfence, NVD Source advisoryWordfence, NVD Source advisoryWordfence, NVD Wordfence advisoryWordfence, NVD

FAQ

What is affected by CVE-2026-12924?

Eventin – Event Calendar, Event Registration, Tickets & Booking (AI Powered) versions listed as affected should be reviewed: *-4.1.15.

What should I fix first?

Start with internet-facing sites, admin panels, login flows, plugins, themes, modules, packages, and systems that process user-controlled input or sensitive data.

How do I confirm the fix worked?

Apply the patched version or mitigation, clear caches where relevant, retest the affected workflow, and run a new Fixnx scan to verify public website exposure signals.

How are Fixnx security risk categories chosen?

Fixnx keeps one canonical risk page and assigns only broad, relevant categories such as ecosystem, technology area, or vulnerability class.