EventPrime <= 4.2.8.4 - Missing Authorization to Authenticated (Subscriber+) Arbitrary Event Modification via 'event_id' Parameter
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.
Affected software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| WordPress plugin | EventPrime – Events Calendar, Bookings, Tickets & AI | <= 4.2.8.4 | 4.2.8.5 |
References
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N- Weakness (CWE)
CWE-862- Platform
- WordPress
- Package
EventPrime – Events Calendar, Bookings, Tickets & AI- Disclosed
- 17.02.2026
- Updated
- 11.10.2026 10:22
Sources and licenses
Wordfence Intelligence - 0e2a2769-1309-4aad-8411-4445efea2b66 - Wordfence Intelligence
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Copyright 2012-2026 Defiant Inc.
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Vulnerability history: EventPrime – Events Calendar, Bookings, Tickets & AI
All published vulnerabilities of this package (WordPress plugin), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 45
- First → latest
- 05.2023 07.2026
- Without a fix
- 0
- Exploited in attacks
- 0
Severity breakdown
- High 5
- Medium 40
Disclosures per year
- 2023: 10
- 2024: 17
- 2025: 4
- 2026: 14
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EventPrime <= 4.2.8.4 - Missing Authorization to Authenticated (Subscriber+) Arbitrary Event Modification via 'event_id' Parameter this entry
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