How severe is CVE-2021-24716?

CVE-2021-24716 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2021-24716 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (46th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-24716?

CVE-2021-24716 affects Webnus Modern Events Calendar Lite. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-24716?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2021-24716 published?

CVE-2021-24716 was published on 2021-11-01 and last updated on 2026-06-17.

CVE-2021-24716

CVE-2021-24716 is a medium-severity vulnerability in Webnus Modern Events Calendar Lite with a CVSS 3.x base score of 5.4. 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-79.

Key facts

Severity: Medium (CVSS 3.x base score 5.4)
CVSS v2: 3.5
EPSS exploit prediction: 1% (46th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Webnus Modern Events Calendar Lite
Published: 2021-11-01
Last modified: 2026-06-17

Description

The Modern Events Calendar Lite WordPress plugin before 5.22.3 does not properly sanitize or escape values set by users with access to adjust settings withing wp-admin.

Frequently asked questions

What is CVE-2021-24716?: The Modern Events Calendar Lite WordPress plugin before 5.22.3 does not properly sanitize or escape values set by users with access to adjust settings withing wp-admin.
How severe is CVE-2021-24716?: CVE-2021-24716 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2021-24716 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (46th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-24716?: CVE-2021-24716 affects Webnus Modern Events Calendar Lite. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-24716?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-24716 published?: CVE-2021-24716 was published on 2021-11-01 and last updated on 2026-06-17.

References

https://wpscan.com/vulnerability/576cc93d-1499-452b-97dd-80f69002e2a0

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-2021-24145 — High (CVSS 7.2): Arbitrary file upload in the Modern Events Calendar Lite WordPress plugin, versions before 5.16.5, did not properly…

All CVEs affecting Webnus Modern Events Calendar Lite →

Other CWE-79 (Cross-site Scripting (XSS)) vulnerabilities

CVE-2025-49410 — Critical (CVSS 10.0): Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Imran Emu TC…
CVE-2024-47875 — Critical (CVSS 10.0): DOMPurify is a DOM-only, super-fast, uber-tolerant XSS sanitizer for HTML, MathML and SVG. DOMpurify was vulnerable to…
CVE-2024-6886 — Critical (CVSS 10.0): Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Gitea…
CVE-2023-45144 — Critical (CVSS 10.0): com.xwiki.identity-oauth:identity-oauth-ui is a package to aid in building identity and service providers based on…
CVE-2023-45138 — Critical (CVSS 10.0): Change Request is an pplication allowing users to request changes on a wiki without publishing the changes directly.…
CVE-2022-4361 — Critical (CVSS 10.0): Keycloak, an open-source identity and access management solution, has a cross-site scripting (XSS) vulnerability in the…

Browse all CWE-79 (Cross-site Scripting (XSS)) vulnerabilities →