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Fencer Vulns
medium 6.1

CVE-2021-24510 json

MF Gig Calendar < 1.2 - Reflected Cross-Site Scripting (XSS)

published 2021-09-13 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-11422

cvss
6.1
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
2.8%
EPSS 2.8% chance of exploitation in 30 days, percentile 86%
public exploits
0
none known, plus a Nuclei check

Summary

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

Patch / fix

  • Unknown MF Gig Calendar 1.2

Exploit prediction

2.82% chance of exploitation in the next 30 days, higher than 86% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • Nuclei template WordPress MF Gig Calendar <=1.1 - Cross-Site Scripting nuclei detection template
  • wpscan.com https://wpscan.com/vulnerability/715721b0-13a1-413a-864d-2380f38ecd39 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 6.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:N/I:P/A:N

Affected products

  • Unknown MF Gig Calendar

Classification

Technology feeds

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.