How severe is CVE-2021-24149?

CVE-2021-24149 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-24149 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (71st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-24149?

CVE-2021-24149 affects Webnus Modern Events Calendar Lite. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-24149?

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-2021-24149 published?

CVE-2021-24149 was published on 2021-03-18 and last updated on 2026-06-17.

CVE-2021-24149

CVE-2021-24149 is a high-severity vulnerability in Webnus Modern Events Calendar Lite with a CVSS 3.x base score of 8.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-89.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 6.5
EPSS exploit prediction: 2% (71st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-89
Affected product: Webnus Modern Events Calendar Lite
Published: 2021-03-18
Last modified: 2026-06-17

Description

Unvalidated input in the Modern Events Calendar Lite WordPress plugin, versions before 5.16.6, did not sanitise the mec[post_id] POST parameter in the mec_fes_form AJAX action when logged in as an author+, leading to an authenticated SQL Injection issue.

Frequently asked questions

What is CVE-2021-24149?: Unvalidated input in the Modern Events Calendar Lite WordPress plugin, versions before 5.16.6, did not sanitise the mec[post_id] POST parameter in the mec_fes_form AJAX action when logged in as an author+, leading to an authenticated SQL Injection issue.
How severe is CVE-2021-24149?: CVE-2021-24149 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-24149 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (71st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-24149?: CVE-2021-24149 affects Webnus Modern Events Calendar Lite. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-24149?: 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-2021-24149 published?: CVE-2021-24149 was published on 2021-03-18 and last updated on 2026-06-17.

References

https://wpscan.com/vulnerability/26819680-22a8-4348-b63d-dc52c0d50ed0

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…
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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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