CVE-2026-1655: CWE-862 Missing Authorization in metagauss EventPrime – Events Calendar, Bookings and Tickets
The EventPrime plugin for WordPress is vulnerable to unauthorized post modification due to missing authorization checks in all versions up to, and including, 4.2.8.4. This is due to the save_frontend_event_submission function accepting a user-controlled event_id parameter and updating the corresponding event post without enforcing ownership or capability checks. This makes it possible for authenticated (Customer+) attackers to modify posts created by administrators by manipulating the event_id parameter granted they can obtain a valid nonce.
AI Analysis
Technical Summary
CVE-2026-1655 is a missing authorization vulnerability (CWE-862) in the EventPrime – Events Calendar, Bookings and Tickets WordPress plugin. The flaw exists in the save_frontend_event_submission function, which updates event posts based on a user-supplied event_id parameter without enforcing ownership or capability checks. Authenticated users with Customer+ roles can exploit this by manipulating the event_id parameter and providing a valid nonce to modify posts created by administrators. This vulnerability affects all versions up to and including 4.2.8.4.
Potential Impact
An authenticated attacker with Customer+ privileges can modify event posts created by administrators by exploiting the missing authorization checks. This could lead to unauthorized changes to event content but does not impact confidentiality or availability. The CVSS score of 4.3 reflects limited impact primarily on integrity.
Mitigation Recommendations
No official patch or fix information is provided in the available data. Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, restrict Customer+ user privileges where possible and monitor for suspicious activity involving event modifications. Avoid sharing valid nonces with untrusted users.
CVE-2026-1655: CWE-862 Missing Authorization in metagauss EventPrime – Events Calendar, Bookings and Tickets
Description
The EventPrime plugin for WordPress is vulnerable to unauthorized post modification due to missing authorization checks in all versions up to, and including, 4.2.8.4. This is due to the save_frontend_event_submission function accepting a user-controlled event_id parameter and updating the corresponding event post without enforcing ownership or capability checks. This makes it possible for authenticated (Customer+) attackers to modify posts created by administrators by manipulating the event_id parameter granted they can obtain a valid nonce.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-1655 is a missing authorization vulnerability (CWE-862) in the EventPrime – Events Calendar, Bookings and Tickets WordPress plugin. The flaw exists in the save_frontend_event_submission function, which updates event posts based on a user-supplied event_id parameter without enforcing ownership or capability checks. Authenticated users with Customer+ roles can exploit this by manipulating the event_id parameter and providing a valid nonce to modify posts created by administrators. This vulnerability affects all versions up to and including 4.2.8.4.
Potential Impact
An authenticated attacker with Customer+ privileges can modify event posts created by administrators by exploiting the missing authorization checks. This could lead to unauthorized changes to event content but does not impact confidentiality or availability. The CVSS score of 4.3 reflects limited impact primarily on integrity.
Mitigation Recommendations
No official patch or fix information is provided in the available data. Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, restrict Customer+ user privileges where possible and monitor for suspicious activity involving event modifications. Avoid sharing valid nonces with untrusted users.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Wordfence
- Date Reserved
- 2026-01-29T19:20:41.453Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 69956e1c80d747be20503e12
Added to database: 2/18/2026, 7:45:32 AM
Last enriched: 4/9/2026, 9:59:09 PM
Last updated: 5/22/2026, 8:33:22 PM
Views: 87
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