CVE-2024-0238: EventON (Free < 2.2.8, Premium < 4.5.6) - Unauthenticated Arbitrary Post Metadata Update

Severity: medium (CVSS 6.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2024-01-16 · updated 2026-06-17
Weakness: CWE-79

Description

The EventON Premium WordPress plugin before 4.5.6, EventON WordPress plugin before 2.2.8 do not have authorisation in an AJAX action, and does not ensure that the post to be updated belong to the plugin, allowing unauthenticated users to update arbitrary post metadata.

Affected products

EventON: before 2.2.7; from 4.0 before 4.5.5 — fixed in 2.2.7, 4.5.5

How to fix

Upgrade to a fixed version: EventON 2.2.7, 4.5.5. Check the vendor advisory for mitigations.

References

https://wpscan.com/vulnerability/774655ac-b201-4d9f-8790-9eff8564bc91/
https://wpscan.com/vulnerability/774655ac-b201-4d9f-8790-9eff8564bc91/

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