Modern Events Calendar Lite <= 5.16.4 — Unauthenticated Events Export
CVE-2021-24146Published · Updated Action summary
Affected: ≤5.16.4Update to 5.16.5 or newer
All remediation steps- Severity
- High7.5
- CVSS
- 7.5CVSS 3.1 · CNA (Wordfence)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:NWhat does this vector mean?
AV:NAttack vector- Network
AC:LAttack complexity- Low
PR:NPrivileges required- None
UI:NUser interaction- None
S:UScope- Unchanged
C:HConfidentiality- High
I:NIntegrity- None
A:NAvailability- None
- Weakness
- CWE-284 Improper Access Control
- Required access
- No account needed
- Exploit prediction (EPSS)
- No score
- CISA KEV
- Not listed
On this page8
Am I affected?
Modern Events Calendar Lite modern-events-calendar-lite
- Affected≤ 5.16.4
- Patched in5.16.5
Update to 5.16.5 or newer.
You are affected if you run ≤ 5.16.4. Version 5.16.5 and later are not affected by this issue.
- Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under Modern Events Calendar Lite.
- 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
- Update to version 5.16.5, or a newer patched version
- Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
- Watch Modern Events Calendar Lite to get an email when the next vulnerability is published.
Advisory
Source description from Wordfence Intelligence, credited to Nguyen Van Khanh.
Lack of authorisation checks in the Modern Events Calendar Lite WordPress plugin, versions before 5.16.5, did not properly restrict access to the export files, allowing unauthenticated users to exports all events data in CSV or XML format for example.
Exploits & references
Proof-of-concept & detection
No public proof-of-concept or detection template is known for this vulnerability.
Advisories & patches
- Advisorywordfence.com
Related CVEs
More in Modern Events Calendar Lite
All 26| Severity | Vulnerability | CVE | Published |
|---|---|---|---|
| Medium6.5 | Authenticated (Subscriber+) SQL Injection via mec_fes_csv_export <7.37.0Update to 7.37.0 | CVE-2026-96534 | |
| Medium6.5 | Authenticated (Subscriber+) SQL Injection <7.37.0Update to 7.37.0 | CVE-2026-102499 | |
| Medium4.3 | Authenticated (Subscriber+) Information Exposure ≤7.36.0Update to 7.37.0 | CVE-2026-110069 | |
| Medium4.3 | Authenticated (Subscriber+) Insecure Direct Object Reference ≤7.36.3Update to 7.36.4 | CVE-2026-110070 | |
| Medium6.5 | Authenticated (Subscriber+) SQL Injection ≤7.36.0Update to 7.37.0 | — |
- Medium6.5Authenticated (Subscriber+) SQL Injection via mec_fes_csv_export
<7.37.0Update to 7.37.0
- Medium6.5Authenticated (Subscriber+) SQL Injection
<7.37.0Update to 7.37.0
- Medium4.3Authenticated (Subscriber+) Information Exposure
≤7.36.0Update to 7.37.0
- Medium4.3Authenticated (Subscriber+) Insecure Direct Object Reference
≤7.36.3Update to 7.36.4
- Medium6.5Authenticated (Subscriber+) SQL Injection
≤7.36.0Update to 7.37.0
Timeline
CVE published
Severity high, CVSS 7.5
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.