{"id":"CVE-2026-13441","state":"PUBLISHED","title":"EventPrime <= 4.3.4.2 - Unauthenticated Stored Cross-Site Scripting via 'new_event_type_background_color' Parameter","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.","publishedAt":"2026-07-09T09:31:20.201Z","updatedAt":"2026-07-09T12:19:37.188Z","severity":{"score":7.2,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N","source":"Wordfence"},"assigner":"Wordfence","products":["metagauss EventPrime – Events Calendar, Bookings and Tickets"],"affected":[{"vendor":"metagauss","product":"EventPrime – Events Calendar, Bookings and Tickets","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThanOrEqual":"4.3.4.2","versionType":"semver"}]}],"references":["https://www.wordfence.com/threat-intel/vulnerabilities/id/2abd400b-c633-4b38-ad3e-c9ce602ff07f?source=cve","https://plugins.trac.wordpress.org/browser/eventprime-event-calendar-management/tags/4.3.4.2/admin/class-eventprime-event-calendar-management-admin.php#L1973","https://plugins.trac.wordpress.org/browser/eventprime-event-calendar-management/tags/4.3.4.2/includes/class-ep-ajax.php#L1200","https://plugins.trac.wordpress.org/browser/eventprime-event-calendar-management/tags/4.3.4.2/includes/class-eventprime-functions.php#L9793","https://plugins.trac.wordpress.org/browser/eventprime-event-calendar-management/trunk/admin/class-eventprime-event-calendar-management-admin.php#L1973","https://plugins.trac.wordpress.org/browser/eventprime-event-calendar-management/trunk/includes/class-ep-ajax.php#L1200","https://plugins.trac.wordpress.org/browser/eventprime-event-calendar-management/trunk/includes/class-eventprime-functions.php#L9793","https://plugins.trac.wordpress.org/changeset?reponame=&old=3595157%40eventprime-event-calendar-management&new=3595157%40eventprime-event-calendar-management"],"weaknesses":["CWE-79"],"ingestedAt":"2026-10-29T20:11:00.674Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/13xxx/CVE-2026-13441.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-13441","state":"PUBLISHED","datePublished":"2026-07-09T09:31:20.201Z","dateUpdated":"2026-07-09T12:19:37.188Z","assignerShortName":"Wordfence","assignerOrgId":"b15e7b5b-3da4-40ae-a43c-f7aa60e62599","dateReserved":"2026-06-26T16:24:58.866Z"},"containers":{"cna":{"title":"EventPrime <= 4.3.4.2 - Unauthenticated Stored Cross-Site Scripting via 'new_event_type_background_color' Parameter","descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"metagauss","product":"EventPrime – Events Calendar, Bookings and Tickets","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThanOrEqual":"4.3.4.2","versionType":"semver"}]}],"references":[{"url":"https://www.wordfence.com/threat-intel/vulnerabilities/id/2abd400b-c633-4b38-ad3e-c9ce602ff07f?source=cve"},{"url":"https://plugins.trac.wordpress.org/browser/eventprime-event-calendar-management/tags/4.3.4.2/admin/class-eventprime-event-calendar-management-admin.php#L1973"},{"url":"https://plugins.trac.wordpress.org/browser/eventprime-event-calendar-management/tags/4.3.4.2/includes/class-ep-ajax.php#L1200"},{"url":"https://plugins.trac.wordpress.org/browser/eventprime-event-calendar-management/tags/4.3.4.2/includes/class-eventprime-functions.php#L9793"},{"url":"https://plugins.trac.wordpress.org/browser/eventprime-event-calendar-management/trunk/admin/class-eventprime-event-calendar-management-admin.php#L1973"},{"url":"https://plugins.trac.wordpress.org/browser/eventprime-event-calendar-management/trunk/includes/class-ep-ajax.php#L1200"},{"url":"https://plugins.trac.wordpress.org/browser/eventprime-event-calendar-management/trunk/includes/class-eventprime-functions.php#L9793"},{"url":"https://plugins.trac.wordpress.org/changeset?reponame=&old=3595157%40eventprime-event-calendar-management&new=3595157%40eventprime-event-calendar-management"}],"metrics":[{"cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N","baseScore":7.2,"baseSeverity":"HIGH"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-79","lang":"en","description":"CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')","type":"CWE"}]}],"providerMetadata":{"shortName":"Wordfence","orgId":"b15e7b5b-3da4-40ae-a43c-f7aa60e62599","dateUpdated":"2026-07-09T09:31:20.201Z"},"credits":[{"lang":"en","type":"finder","value":"Philipp Doblhofer"}],"timeline":[{"time":"2026-06-26T16:40:56.000Z","lang":"en","value":"Vendor Notified"},{"time":"2026-07-08T00:00:00.000Z","lang":"en","value":"Disclosed"}]},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-07-09T12:19:01.218748Z","id":"CVE-2026-13441","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-07-09T12:19:37.188Z"}}]}}}