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Vulnerability record · CVE-2023-6158 · published 10 January 2024

CVE-2023-6158: Myeventon eventon missing authorization vulnerability

Myeventon · Eventon

The EventON - WordPress Virtual Event Calendar Plugin plugin for WordPress is vulnerable to unauthorized modification of data and loss of data due to a missing capability check on the evo_eventpost_update_meta function in all versions up to, and including, 4.5.4 (for Pro) and 2.2.7 (for free). This makes it possible for unauthenticated attackers to update and remove arbitrary post metadata. Note that certain parameters may allow for content injection. CVE-2024-0238 appears to be a duplicate of this issue.

6.5 CVSS 3.1 Medium EPSS 0.56% · top 55.5% CWE-862 · Missing authorization
6.5CVSS 3.1 base score
0.56%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
6References
17 Jun 2026Last modified by NVD

Description

The EventON - WordPress Virtual Event Calendar Plugin plugin for WordPress is vulnerable to unauthorized modification of data and loss of data due to a missing capability check on the evo_eventpost_update_meta function in all versions up to, and including, 4.5.4 (for Pro) and 2.2.7 (for free). This makes it possible for unauthenticated attackers to update and remove arbitrary post metadata. Note that certain parameters may allow for content injection. CVE-2024-0238 appears to be a duplicate of this issue.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://docs.myeventon.com/documentations/eventon-changelog/ Release Notes
https://plugins.trac.wordpress.org/changeset/3017578/eventon-lite/trunk/includes/admin/class-admin-ajax.php Patch
https://www.wordfence.com/threat-intel/vulnerabilities/id/19f94c4f-145b-4058-aabd-06525fce3cea?source=cve Third Party Advisory
https://docs.myeventon.com/documentations/eventon-changelog/ Release Notes
https://plugins.trac.wordpress.org/changeset/3017578/eventon-lite/trunk/includes/admin/class-admin-ajax.php Patch
https://www.wordfence.com/threat-intel/vulnerabilities/id/19f94c4f-145b-4058-aabd-06525fce3cea?source=cve Third Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

6.1CVE-2023-7200Myeventon eventon cross-site scripting vulnerabilityThe EventON WordPress plugin before 4.4.1 does not sanitise and escape a parameter before outputting it back in the page, leading to a Reflected Cros…EPSS 0.43%6.1CVE-2024-0233Myeventon eventon cross-site scripting vulnerabilityThe EventON WordPress plugin before 4.5.5, EventON WordPress plugin before 2.2.7 do not properly sanitise and escape a parameter before outputting it…EPSS 0.37%6.1CVE-2024-0238Myeventon eventon cross-site scripting vulnerabilityThe 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 en…EPSS 0.37%6.1CVE-2023-4635Myeventon eventon-lite cross-site scripting vulnerabilityThe EventON plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the 'tab' parameter in versions up to, and including, 2.2.2 due …EPSS 0.61%6.1CVE-2020-29395Myeventon eventon cross-site scripting vulnerabilityThe EventON plugin through 3.0.5 for WordPress allows addons/?q= XSS via the search field.EPSS 13%5.9CVE-2024-4752Myeventon eventon cross-site scripting vulnerabilityThe EventON WordPress plugin before 2.2.15 does not sanitise and escape some of its settings, which could allow high privilege users such as admin to…EPSS 0.40%5.4CVE-2025-3527Myeventon eventon missing authorization vulnerabilityThe EventON Pro plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check in the 'assets/lib/settings…EPSS 0.20%5.3CVE-2024-0235Myeventon eventon missing authorization vulnerabilityThe EventON WordPress plugin before 4.5.5, EventON WordPress plugin before 2.2.7 do not have authorisation in an AJAX action, allowing unauthenticate…EPSS 38%

Source: NIST National Vulnerability Database (record CVE-2023-6158), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.