// For flags

CVE-2021-24927

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

Severity Score

5.4
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

1
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

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

El plugin My Calendar de WordPress versiones anteriores a 3.2.18, no sanea y escapa del parámetro callback de la acción AJAX mc_post_lookup (disponible para cualquier usuario autenticado) antes de devolverlo a la respuesta, conllevando a un problema de tipo Cross-Site Scripting Reflejado

*Credits: Krzysztof Zając
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
Required
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None
Attack Vector
Network
Attack Complexity
Medium
Authentication
Single
Confidentiality
None
Integrity
Partial
Availability
None
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2021-01-14 CVE Reserved
  • 2021-11-01 CVE Published
  • 2023-06-22 EPSS Updated
  • 2024-08-03 CVE Updated
  • 2024-08-03 First Exploit
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
CWE
  • CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
My Calendar Project
Search vendor "My Calendar Project"
 My Calendar
Search vendor "My Calendar Project" for product "My Calendar"
 < 3.2.18
Search vendor "My Calendar Project" for product "My Calendar" and version " < 3.2.18"
wordpress
Affected