How severe is CVE-2021-24146?

CVE-2021-24146 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.

Is CVE-2021-24146 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 31% (98th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-24146?

CVE-2021-24146 affects Webnus Modern Events Calendar Lite. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-24146?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2021-24146 published?

CVE-2021-24146 was published on 2021-03-18 and last updated on 2026-06-17.

CVE-2021-24146

CVE-2021-24146 is a high-severity vulnerability in Webnus Modern Events Calendar Lite with a CVSS 3.x base score of 7.5. Its EPSS exploit-prediction score of 31% places it in the 98th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-862.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 31% (98th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-862
Affected product: Webnus Modern Events Calendar Lite
Published: 2021-03-18
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2021-24146?: 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.
How severe is CVE-2021-24146?: CVE-2021-24146 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.
Is CVE-2021-24146 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 31% (98th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-24146?: CVE-2021-24146 affects Webnus Modern Events Calendar Lite. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-24146?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2021-24146 published?: CVE-2021-24146 was published on 2021-03-18 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:webnus:modern_events_calendar_lite:*:*:*:*:*:wordpress:*:*

More vulnerabilities in Webnus Modern Events Calendar Lite

CVE-2021-24946 — Critical (CVSS 9.8): The Modern Events Calendar Lite WordPress plugin before 6.1.5 does not sanitise and escape the time parameter before…
CVE-2024-5441 — High (CVSS 8.8): The Modern Events Calendar plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type…
CVE-2021-24149 — High (CVSS 8.8): Unvalidated input in the Modern Events Calendar Lite WordPress plugin, versions before 5.16.6, did not sanitise the…
CVE-2024-6522 — High (CVSS 8.5): The Modern Events Calendar plugin for WordPress is vulnerable to Server-Side Request Forgery in all versions up to, and…
CVE-2021-24145 — High (CVSS 7.2): Arbitrary file upload in the Modern Events Calendar Lite WordPress plugin, versions before 5.16.5, did not properly…
CVE-2021-24925 — Medium (CVSS 6.1): The Modern Events Calendar Lite WordPress plugin before 6.1.5 does not sanitise and escape the current_month_divider…

All CVEs affecting Webnus Modern Events Calendar Lite →

Other CWE-862 (Missing Authorization) vulnerabilities

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CVE-2026-2031 — Critical (CVSS 10.0): An Improper Access Control vulnerability in several internal API endpoints for Google Cloud Application Integration…
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CVE-2025-30416 — Critical (CVSS 10.0): Sensitive data disclosure and manipulation due to missing authorization. The following products are affected: Acronis…
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Browse all CWE-862 (Missing Authorization) vulnerabilities →