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, 4.1.22. 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 bypass payment for paid events, fraudulently mark orders as completed, deplete ticket inventory, and trigger confirmation emails for tickets never purchased. This is exploitable by unauthenticated attackers because the wp_rest nonce is publicly emitted on every frontend page, and the order creation endpoint mints and returns an order_access_token to any caller possessing that nonce — giving unauthenticated users all credentials required to reach the privileged update_booking_status branch.
This CVE has been withdrawn by MITRE
MITRE marked CVE-2026-15398 as REJECTED on . It is no longer considered a valid vulnerability record. The original content below is preserved for historical reference only.
Reason given by MITRE
** REJECT ** DO NOT USE THIS CANDIDATE NUMBER. ConsultIDs: CVE-2026-82223 Reason: This candidate is a reservation duplicate of CVE-2026-82223. Notes: All CVE users should reference CVE-2026-82223 instead of this candidate. All references and descriptions in this candidate have been removed to prevent accidental usage.
CVE-2026-15398
✕ Withdrawn — historical dataMEDIUMPre-NVD 4.3
4.3CVSS
- CVSS v3
- 4.3
- EchelonGraph score
- Not yet assessedThis CVE record was withdrawn by its numbering authority, so there is no vulnerability to rate.
- EPSS PROB
- —
- EPSS %ILE
- —
- KEV
- —Not applicable: this CVE ID was withdrawn
Published
September 9, 2026
Last Modified
September 9, 2026
References (14)
- security@wordfencehttps://plugins.trac.wordpress.org/browser/wp-event-solution/tags/4.1.15/base/Enqueue/frontend.php#L28
- security@wordfencehttps://plugins.trac.wordpress.org/browser/wp-event-solution/tags/4.1.15/core/Order/OrderController.php#L440
- security@wordfencehttps://plugins.trac.wordpress.org/browser/wp-event-solution/tags/4.1.15/core/Order/OrderController.php#L733
- security@wordfencehttps://plugins.trac.wordpress.org/browser/wp-event-solution/tags/4.1.15/core/Order/OrderController.php#L768
- security@wordfencehttps://plugins.trac.wordpress.org/browser/wp-event-solution/tags/4.1.15/core/Order/OrderController.php#L926
- security@wordfencehttps://plugins.trac.wordpress.org/browser/wp-event-solution/tags/4.1.15/utils/locale/vars.php#L35
- security@wordfencehttps://plugins.trac.wordpress.org/browser/wp-event-solution/tags/4.1.16/base/Enqueue/frontend.php#L28
- security@wordfencehttps://plugins.trac.wordpress.org/browser/wp-event-solution/tags/4.1.16/core/Order/OrderController.php#L440
- security@wordfencehttps://plugins.trac.wordpress.org/browser/wp-event-solution/tags/4.1.16/core/Order/OrderController.php#L733
- security@wordfencehttps://plugins.trac.wordpress.org/browser/wp-event-solution/tags/4.1.16/core/Order/OrderController.php#L768
- security@wordfencehttps://plugins.trac.wordpress.org/browser/wp-event-solution/tags/4.1.16/core/Order/OrderController.php#L926
- security@wordfencehttps://plugins.trac.wordpress.org/browser/wp-event-solution/tags/4.1.16/utils/locale/vars.php#L35
- security@wordfencehttps://plugins.trac.wordpress.org/changeset?reponame=&old=3668637%40wp-event-solution&new=3668637%40wp-event-solution
- security@wordfencehttps://www.wordfence.com/threat-intel/vulnerabilities/id/dd7baa69-88f7-4546-96c8-4829a63d0a99?source=cve
Frequently asked(4)
What is CVE-2026-15398?
CVE-2026-15398 is a rejected CVE ID: its record was withdrawn on October 16, 2026 and no longer describes a vulnerability. Reason given: ** REJECT ** DO NOT USE THIS CANDIDATE NUMBER. ConsultIDs: CVE-2026-82223 Reason: This candidate is a reservation duplicate of CVE-2026-82223. Notes: All CVE users should reference CVE-2026-82223 instead of this candidate. All references and descriptions in this candidate have been removed to prevent accidental usage. Its record names CVE-2026-82223 as the replacement.
When was the CVE record for CVE-2026-15398 published?
The CVE record for CVE-2026-15398 was published on September 9, 2026. EchelonGraph's copy of the record carries a last-modified date of September 9, 2026; the record at its source may have been updated since.
What is the CVSS score of CVE-2026-15398?
CVE-2026-15398 has a CVSS base score of 4.3 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-15398?
There is nothing to remediate under CVE-2026-15398: it is a rejected (withdrawn) CVE ID and no longer describes a vulnerability. Its record names CVE-2026-82223 as the replacement; act on that CVE instead.