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EventON — WordPress Virtual Event Calendar Plugin Pro <= 4.5.4 & Free <= 2.2.7 - Missing Authorization to Arbitrary Post Meta Update via evo_eventpost_update_meta

CVE-2023-6158Published · Updated

Action summary

EventON – Events Calendar: Affected: ≤2.2.7Update to 2.2.8 or newer

EventON (Pro) - WordPress Virtual Event Calendar Plugin: Affected: ≤4.5.4Update to 4.5.5 or newer

All remediation steps
Watch plugin
Severity
Medium6.5
CVSS
6.5
CVSS 3.1 · CNA (Wordfence)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
What does this vector mean?
AV:N Attack vector
Network
AC:L Attack complexity
Low
PR:N Privileges required
None
UI:N User interaction
None
S:U Scope
Unchanged
C:N Confidentiality
None
I:L Integrity
Low
A:L Availability
Low
Weakness
CWE-862 Missing Authorization
Required access
No account needed
Exploit prediction (EPSS)
No score
CISA KEV
Not listed
On this page8

Am I affected?

EventON – Events Calendar eventon-lite

  1. Affected≤ 2.2.7
  2. Patched in2.2.8

Update to 2.2.8 or newer.

You are affected if you run ≤ 2.2.7. Version 2.2.8 and later are not affected by this issue.

EventON (Pro) - WordPress Virtual Event Calendar Plugin eventON

  1. Affected≤ 4.5.4
  2. Patched in4.5.5

Update to 4.5.5 or newer.

You are affected if you run ≤ 4.5.4. Version 4.5.5 and later are not affected by this issue.

  • Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under EventON – Events Calendar.
  • No admin access? Run a passive check of your site. It reads public files only.
  • No account is needed to exploit this. Treat any exposed site on an affected version as at risk.

What to do

  1. Update to version 2.2.8, or a newer patched version
  2. Update to version 4.5.5, or a newer patched version
  3. Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
  4. Watch EventON – Events Calendar to get an email when the next vulnerability is published.

Advisory

Source description from Wordfence Intelligence, credited to Francesco Carlucci.

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.

Exploits & references

Proof-of-concept & detection

No public proof-of-concept or detection template is known for this vulnerability.

Advisories & patches

More in EventON – Events Calendar

All 22
More vulnerabilities in EventON – Events Calendar
SeverityVulnerabilityCVEPublished
Medium6.4Authenticated (Subscriber+) Stored Cross-Site Scripting
≤2.5.7Update to 2.5.8
CVE-2026-81791
Medium4.3Authenticated (Contributor+) Information Disclosure
≤2.4.7Update to 2.4.8
CVE-2025-8091
Medium5.3Missing Authorization
≤2.4.4Update to 2.4.5
CVE-2025-48116
High8.8Authenticated (Contributor+) Local File Inclusion
≤2.4.1Update to 2.4.2
CVE-2025-47494
Critical9.8Unauthenticated Local File Inclusion
≤2.4Update to 2.4.1
CVE-2025-32614

Same weakness (Missing Authorization)

All Missing Authorization
Other Missing Authorization vulnerabilities
SeverityVulnerabilityCVEPublished
High7.2Unauthenticated Stored Cross-Site Scripting via Comment User-Agent Header
EZ SQL Reports Shortcode Widget and DB Backup≤5.25.25Update to 5.26.45
CVE-2026-120688
Critical9.8Unauthenticated Arbitrary File Upload via File Upload via Public Form Submission
Chatterbug Forms – Fast, Flexible WordPress Form Builder≤1.0.2Update to 1.1
CVE-2026-125055
Critical9.8Unauthenticated PHP Object Injection to Remote Code Execution via 'form' Parameter
ELEX WordPress HelpDesk & Customer Ticketing System≤3.3.9Update to 3.4.0
CVE-2026-119077
Medium5.3Unauthenticated Sensitive Information Exposure in 'search' Parameter
Customer Reviews for WooCommerce≤5.127.0Update to 5.128.0
CVE-2026-121518

Timeline

  1. CVE published

    Severity medium, CVSS 6.5

  2. Record last updated

Sources & licenses

Wordfence record
Vulnerability data
Wordfence Intelligence. Copyright 2012-2026 Defiant Inc. Licensed under the CC BY-SA 4.0.
CVE® identifiers
Copyright 1999-2026 The MITRE Corporation. Used under the CVE Program. CVE® is a registered trademark of The MITRE Corporation.
CVSS / CWE
National Vulnerability Database (NVD), shown unmodified. This product uses the NVD API but is not endorsed or certified by the NVD.
VulnCrest content
Summary, remediation guidance and page layout © VulnCrest. Not sourced from NVD.

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