How severe is CVE-2021-24946?

CVE-2021-24946 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-24946 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 73% (99th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-24946?

CVE-2021-24946 affects Webnus Modern Events Calendar Lite. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-24946?

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

When was CVE-2021-24946 published?

CVE-2021-24946 was published on 2021-12-13 and last updated on 2026-06-17.

CVE-2021-24946

CVE-2021-24946 is a critical-severity vulnerability in Webnus Modern Events Calendar Lite with a CVSS 3.x base score of 9.8. Its EPSS exploit-prediction score of 73% places it in the 99th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-89.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 73% (99th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-89
Affected product: Webnus Modern Events Calendar Lite
Published: 2021-12-13
Last modified: 2026-06-17

Description

The Modern Events Calendar Lite WordPress plugin before 6.1.5 does not sanitise and escape the time parameter before using it in a SQL statement in the mec_load_single_page AJAX action, available to unauthenticated users, leading to an unauthenticated SQL injection issue

Frequently asked questions

What is CVE-2021-24946?: The Modern Events Calendar Lite WordPress plugin before 6.1.5 does not sanitise and escape the time parameter before using it in a SQL statement in the mec_load_single_page AJAX action, available to unauthenticated users, leading to an unauthenticated SQL injection issue
How severe is CVE-2021-24946?: CVE-2021-24946 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-24946 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 73% (99th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-24946?: CVE-2021-24946 affects Webnus Modern Events Calendar Lite. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-24946?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2021-24946 published?: CVE-2021-24946 was published on 2021-12-13 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

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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-2021-24145 — 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…

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