How severe is CVE-2021-24145?

CVE-2021-24145 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-24145 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 88% (100th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-24145?

CVE-2021-24145 affects Webnus Modern Events Calendar Lite. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-24145?

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-2021-24145 published?

CVE-2021-24145 was published on 2021-03-18 and last updated on 2026-06-17.

CVE-2021-24145

CVE-2021-24145 is a high-severity vulnerability in Webnus Modern Events Calendar Lite with a CVSS 3.x base score of 7.2. Its EPSS exploit-prediction score of 88% places it in the 100th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-434.

Key facts

Severity: High (CVSS 3.x base score 7.2)
CVSS v2: 6.5
EPSS exploit prediction: 88% (100th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-434
Affected product: Webnus Modern Events Calendar Lite
Published: 2021-03-18
Last modified: 2026-06-17

Description

Arbitrary file upload in the Modern Events Calendar Lite WordPress plugin, versions before 5.16.5, did not properly check the imported file, allowing PHP ones to be uploaded by administrator by using the 'text/csv' content-type in the request.

Frequently asked questions

What is CVE-2021-24145?: Arbitrary file upload in the Modern Events Calendar Lite WordPress plugin, versions before 5.16.5, did not properly check the imported file, allowing PHP ones to be uploaded by administrator by using the 'text/csv' content-type in the request.
How severe is CVE-2021-24145?: CVE-2021-24145 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-24145 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 88% (100th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-24145?: CVE-2021-24145 affects Webnus Modern Events Calendar Lite. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-24145?: 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-2021-24145 published?: CVE-2021-24145 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-2021-24146 — High (CVSS 7.5): Lack of authorisation checks in the Modern Events Calendar Lite WordPress plugin, versions before 5.16.5, did not…
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…

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Other CWE-434 (Unrestricted Upload of File with Dangerous Type) vulnerabilities

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