Which products and versions are affected by CVE-2021-24146?

Affected: Modern Events Calendar Lite (Webnus) versions >= 5.16.5. The full list is in the CVE brief.

Is CVE-2021-24146 being exploited in the wild?

It is not listed in any known-exploited vulnerabilities catalog.

Is CVE-2021-24146 in the CISA KEV catalog?

No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.

Is there a public exploit for CVE-2021-24146?

Public exploit code is available.

Is there a fix for CVE-2021-24146?

Fixed versions are available, including Modern Events Calendar Lite 5.16.5.

How urgently should CVE-2021-24146 be patched?

Brandefense priority: patch immediately, because public exploit code exists for a high-severity flaw.

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Vulnerability Intelligence

CVE-2021-24146

HighPublic exploit

Modern Events Calendar Lite <= 5.16.4 - Unauthenticated Events Export

Published Jul 5, 2021 · Updated Jul 9, 2026 · Also known as 8e361473-8ed6-41d0-b409-2436189c1120

Key Facts

Patch immediately

CVE-2021-24146 is a high-severity vulnerability (CVSS 7.5 v3.1) affecting Modern Events Calendar Lite (Webnus).
It is not listed in any known-exploited vulnerabilities catalog. Public exploit code is available.
EPSS estimates a 31% probability of exploitation in the next 30 days.
Fixed versions are available, including Modern Events Calendar Lite 5.16.5.
Brandefense priority: patch immediately, because public exploit code exists for a high-severity flaw.

CVSS v3.1

7.5

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

EPSS (30-day exploit likelihood)

31%

Higher than 98.2% of all scored CVEs

Exploited in the wild

No known

Not in a known-exploited catalog

Public exploit code

Available

Proof-of-concept or weaponized module

Get the full CVE-2021-24146 brief as a PDF

Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.

Description

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.

Affected Products

3 affected entries in total

Product	Affected versions	Fixed in
Modern Events Calendar LiteWebnus	>= 5.16.5	5.16.5

Patched Releases

Modern Events Calendar Lite

5.16.5

Timeline

Publicly disclosed
Jul 5, 2021
Last updated
Jul 9, 2026

Weakness Type

CWE-284 Improper Access Control
CWE-862 Missing Authorization

References

15 more references in the full CVE brief

FAQ

Common Questions.

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.
Affected: Modern Events Calendar Lite (Webnus) versions >= 5.16.5. The full list is in the CVE brief.
It is not listed in any known-exploited vulnerabilities catalog.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
Public exploit code is available.
Fixed versions are available, including Modern Events Calendar Lite 5.16.5.
Brandefense priority: patch immediately, because public exploit code exists for a high-severity flaw.

Is CVE-2021-24146 Running On Your Attack Surface?

Brandefense maps vulnerabilities like this one to your internet-facing assets and tells you exactly where to patch.