What is CVE-2021-24510?

CVE-2021-24510 is a medium-severity vulnerability in Mf Gig Calendar Project, classified under CWE-79 CROSS-SITE SCRIPTING (XSS). CVSS score: 6.1/10. Published 2021-09-13.

How severe is CVE-2021-24510?

Medium severity. CVSS v3 base score is 6.1 out of 10.

Is CVE-2021-24510 known to be exploited?

4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Mf Gig Calendar Project

CVE-2021-24510

The MF Gig Calendar WordPress plugin before 1.2 does not sanitise and escape the id GET parameter before outputting back in the admin dashboard when editing an Event, leading to a reflected Cross-Site Scripting issue

Published 2021-09-13 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.027 (85.5th percentile), scored 2026-10-01.

Low probability of exploitation in the next 30 days, but still tracked. 86th percentile — 85.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.027 · newest: 0.027 · change: 0.000

Affected products

Mf Gig Calendar Project
Mf Gig Calendar — versions 0

Public proof-of-concept exploits

References

wpscan.com/vulnerability/715721b0-13a1-413a-864d-2380f38ecd39 (technical-description, Third Party Advisory, exploit, vdb-entry)

Frequently asked questions

What is CVE-2021-24510?: CVE-2021-24510 is a medium-severity vulnerability in Mf Gig Calendar Project, classified under CWE-79 CROSS-SITE SCRIPTING (XSS). CVSS score: 6.1/10. Published 2021-09-13.
How severe is CVE-2021-24510?: Medium severity. CVSS v3 base score is 6.1 out of 10.
Is CVE-2021-24510 known to be exploited?: 4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.