{"id":"CVE-2026-11821","state":"PUBLISHED","title":"Eventin <= 4.1.17 - Missing Authorization to Authenticated (Subscriber+) Notification Flow Management via notification-flow REST API Endpoint","description":"The Eventin – Event Calendar, Event Registration, Tickets & Booking (AI Powered) plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 4.1.17. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for authenticated attackers, with subscriber-level access and above, to view, create, update, clone, and delete notification flow event automation workflows that should be restricted to administrators.","publishedAt":"2026-09-09T04:28:34.581Z","updatedAt":"2026-09-09T16:03:07.389Z","severity":{"score":5.4,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N","source":"Wordfence"},"assigner":"Wordfence","products":["arraytics Eventin – Event Calendar, Tickets, Registration, Booking & WooCommerce"],"affected":[{"vendor":"arraytics","product":"Eventin – Event Calendar, Tickets, Registration, Booking & WooCommerce","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThanOrEqual":"4.1.17","versionType":"semver"}]}],"references":["https://www.wordfence.com/threat-intel/vulnerabilities/id/560a3102-c274-450f-9119-ea47ee2e7c65?source=cve","https://plugins.trac.wordpress.org/browser/wp-event-solution/tags/4.1.17/vendor/themewinter/email-notification-sdk/src/Flow/FlowAPI.php#L66","https://plugins.trac.wordpress.org/browser/wp-event-solution/tags/4.1.18/vendor/themewinter/email-notification-sdk/src/Flow/FlowAPI.php#L66","https://plugins.trac.wordpress.org/changeset/3612206/wp-event-solution/trunk/vendor/themewinter/email-notification-sdk/src/Flow/FlowAPI.php"],"weaknesses":["CWE-862"],"ingestedAt":"2026-10-29T20:10:52.580Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/11xxx/CVE-2026-11821.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-11821","state":"PUBLISHED","datePublished":"2026-09-09T04:28:34.581Z","dateUpdated":"2026-09-09T16:03:07.389Z","assignerShortName":"Wordfence","assignerOrgId":"b15e7b5b-3da4-40ae-a43c-f7aa60e62599","dateReserved":"2026-06-09T17:46:16.572Z"},"containers":{"cna":{"title":"Eventin <= 4.1.17 - Missing Authorization to Authenticated (Subscriber+) Notification Flow Management via notification-flow REST API Endpoint","descriptions":[{"lang":"en","value":"The Eventin – Event Calendar, Event Registration, Tickets & Booking (AI Powered) plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 4.1.17. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for authenticated attackers, with subscriber-level access and above, to view, create, update, clone, and delete notification flow event automation workflows that should be restricted to administrators."}],"affected":[{"vendor":"arraytics","product":"Eventin – Event Calendar, Tickets, Registration, Booking & WooCommerce","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThanOrEqual":"4.1.17","versionType":"semver"}]}],"references":[{"url":"https://www.wordfence.com/threat-intel/vulnerabilities/id/560a3102-c274-450f-9119-ea47ee2e7c65?source=cve"},{"url":"https://plugins.trac.wordpress.org/browser/wp-event-solution/tags/4.1.17/vendor/themewinter/email-notification-sdk/src/Flow/FlowAPI.php#L66"},{"url":"https://plugins.trac.wordpress.org/browser/wp-event-solution/tags/4.1.18/vendor/themewinter/email-notification-sdk/src/Flow/FlowAPI.php#L66"},{"url":"https://plugins.trac.wordpress.org/changeset/3612206/wp-event-solution/trunk/vendor/themewinter/email-notification-sdk/src/Flow/FlowAPI.php"}],"metrics":[{"cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N","baseScore":5.4,"baseSeverity":"MEDIUM"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-862","lang":"en","description":"CWE-862 Missing Authorization","type":"CWE"}]}],"providerMetadata":{"shortName":"Wordfence","orgId":"b15e7b5b-3da4-40ae-a43c-f7aa60e62599","dateUpdated":"2026-09-09T04:28:34.581Z"},"credits":[{"lang":"en","type":"finder","value":"Sushi Com Abacate"}],"timeline":[{"time":"2026-06-09T18:01:27.000Z","lang":"en","value":"Vendor Notified"},{"time":"2026-09-08T16:23:30.000Z","lang":"en","value":"Disclosed"}]},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-09-09T15:49:50.407986Z","id":"CVE-2026-11821","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-09-09T16:03:07.389Z"}}]}}}