CVE-2021-24927

MediumCVSS 5.4/10Last modified Jun 17, 2026

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

Metrics

CVSS 3.1 5.4/10CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Weakness enumeration

CWE-79

Affected software

VendorProductVersions
UnknownMy Calendar>= 3.2.18, < 3.2.18

References

Timeline

Published
Nov 29, 2021
Last modified
Jun 17, 2026
NVD status
Modified

Related CVEs from 2021

CVE-2021-249286.5The Rearrange Woocommerce Products WordPress plugin before 3.0.8 does not have proper access controls in the save_all_order AJAX action, norCVE-2021-249305.4The WordPress Online Booking and Scheduling Plugin WordPress plugin before 20.3.1 does not escape the Staff Full Name field before outputtinCVE-2021-249319.8The Secure Copy Content Protection and Content Locking WordPress plugin before 2.8.2 does not escape the sccp_id parameter of the ays_sccp_rCVE-2021-249326.1The Auto Featured Image (Auto Post Thumbnail) WordPress plugin before 3.9.3 does not sanitise and escape the post_id parameter before outputCVE-2021-249335.4The Dynamic Widgets WordPress plugin through 1.5.16 does not escape the prefix parameter before outputting it back in an attribute when usinCVE-2021-249346.1The Visual CSS Style Editor WordPress plugin before 7.5.4 does not sanitise and escape the wyp_page_type parameter before outputting it backCVE-2021-249356.1The WP Google Fonts WordPress plugin before 3.1.5 does not escape the googlefont_ajax_name and googlefont_ajax_family parameter of the googlCVE-2021-249368.0The WP Extra File Types WordPress plugin before 0.5.1 does not have CSRF check when saving its settings, nor sanitise and escape some of theCVE-2021-249376.1The Asset CleanUp: Page Speed Booster WordPress plugin before 1.3.8.5 does not escape the wpacu_selected_sub_tab_area parameter before outpuCVE-2021-249386.1The WOOCS WordPress plugin before 1.3.7.1 does not sanitise and escape the key parameter of the woocs_update_profiles_data AJAX action (avaiCVE-2021-249396.1The LoginWP (Formerly Peter's Login Redirect) WordPress plugin before 3.0.0.5 does not sanitise and escape the rul_login_url and rul_logout_CVE-2021-249406.1The Persian Woocommerce WordPress plugin through 5.8.0 does not escape the s parameter before outputting it back in an attribute in the admi
CVE-2021-24927: Medium severity, CVSS 5.4 | Vulnix