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CVE-2021-24927: 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

medium Affects my-calendar (WordPress plugin). Feed 2026.10.29.1, updated 2026-10-28; published ; advisory modified .

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

Package
my-calendar (WordPress plugin) WordPress
Affected versions
<3.2.18
Fixed in
3.2.18
Severity
medium  CVSS 5.4
Exploitation
not on CISA KEV · EPSS 1% (49.6th percentile)
Published
2021-11-29
Source
nvd

References

CWE-79
NVD recordmy-calendar (WordPress plugin) advisories

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