Medium (4.3). EPSS 0.2% chance of exploitation in the next 30 days.
The Event post plugin for WordPress is vulnerable to unauthorized bulk metadata update due to a missing nonce check on the save_bulkdatas function in all versions up to, and including, 5.9.10. This makes it possible for unauthenticated attackers to update post_meta_data via a forged request, granted they can trick a logged-in user into performing an action such as clicking on a link.
Severity
CVSS 3.1
4.3 medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
EPSS
0.2% chance of exploitation in the next 30 days; higher than 8% of CVEs (scores of 2026-10-31)