EventPrime <= 4.3.4.2 - Unauthenticated Stored Cross-Site Scripting via 'new_event_type_background_color' Parameter
Summary
| CVE | CVE-2026-13441 |
|---|---|
| State | PUBLISHED |
| Assigner | Wordfence |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-07-09 11:16:24 UTC |
| Updated | 2026-07-09 16:19:45 UTC |
| Description | 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. |
Risk And Classification
Primary CVSS: v3.1 7.2 HIGH from [email protected]
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
EPSS: 0.002470000 probability, percentile 0.158370000 (date 2026-07-13)
Problem Types: CWE-79 | CWE-79 CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.1 | [email protected] | Secondary | 7.2 | HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N |
| 3.1 | CNA | DECLARED | 7.2 | HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N |
CVSS v3.1 Breakdown
Attack Vector
NetworkAttack Complexity
LowPrivileges Required
NoneUser Interaction
NoneScope
ChangedConfidentiality
LowIntegrity
LowAvailability
NoneCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Metagauss | EventPrime Events Calendar Bookings And Tickets | affected 4.3.4.2 semver | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| plugins.trac.wordpress.org/browser/eventprime-event-calendar-management/trunk/includes/c... | [email protected] | plugins.trac.wordpress.org | |
| plugins.trac.wordpress.org/browser/eventprime-event-calendar-management/tags/4.3.4.2/inc... | [email protected] | plugins.trac.wordpress.org | |
| www.wordfence.com/threat-intel/vulnerabilities/id/2abd400b-c633-4b38-ad3e-c9ce6... | [email protected] | www.wordfence.com | |
| plugins.trac.wordpress.org/browser/eventprime-event-calendar-management/tags/4.3.4.2/adm... | [email protected] | plugins.trac.wordpress.org | |
| plugins.trac.wordpress.org/browser/eventprime-event-calendar-management/tags/4.3.4.2/inc... | [email protected] | plugins.trac.wordpress.org | |
| plugins.trac.wordpress.org/browser/eventprime-event-calendar-management/trunk/admin/clas... | [email protected] | plugins.trac.wordpress.org | |
| plugins.trac.wordpress.org/browser/eventprime-event-calendar-management/trunk/includes/c... | [email protected] | plugins.trac.wordpress.org | |
| plugins.trac.wordpress.org/changeset | [email protected] | plugins.trac.wordpress.org | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
Vendor Comments And Credit
Discovery Credit
CNA: Philipp Doblhofer (en)
Additional Advisory Data
| Source | Time | Event |
|---|---|---|
| CNA | 2026-06-26T16:40:56.000Z | Vendor Notified |
| CNA | 2026-07-08T00:00:00.000Z | Disclosed |
There are currently no legacy QID mappings associated with this CVE.