CVE-2021-24927

Public Exploit
My Calendar < 3.2.18 - Subscriber+ Reflected Cross-Site Scripting

Description

The My Calendar WordPress plugin before 3.2.18 does not sanitise and escape the callback parameter of the mc_post_lookup AJAX action (available to any authenticated user) before outputting it back in the response, leading to a Reflected Cross-Site Scripting issue

Category

5.4
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.22%
Third-Party Advisory wpscan.com
Affected: Unknown My Calendar
Published at:
Updated at:

References

Link Tags
https://wpscan.com/vulnerability/86f3acc7-8902-4215-bd75-6105d601524e third party advisory exploit

Frequently Asked Questions

What is the severity of CVE-2021-24927?
CVE-2021-24927 has been scored as a medium severity vulnerability.
How to fix CVE-2021-24927?
To fix CVE-2021-24927, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-24927 being actively exploited in the wild?
It is possible that CVE-2021-24927 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-24927?
CVE-2021-24927 affects Unknown My Calendar.
This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.
© 2025 Under My Watch. All Rights Reserved.