// For flags

CVE-2024-7877

Appointment Booking Calendar < 1.6.7.55 - Admin+ Stored XSS

Severity Score

4.8
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

1
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

Track*
*SSVC
Descriptions

The Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin WordPress plugin before 1.6.7.55 does not sanitise and escape some of its Notification settings, which could allow high privilege users such as admin to perform Cross-Site Scripting attacks even when unfiltered_html is disallowed

The Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin plugin for WordPress is vulnerable to Stored Cross-Site Scripting via notification settings in all versions up to, and including, 1.6.7.53 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with administrator-level permissions and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This only affects multi-site installations and installations where unfiltered_html has been disabled.

*Credits: Jeewan Kumar Bhatta, WPScan
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
High
User Interaction
Required
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None
Attack Vector
Network
Attack Complexity
High
Privileges Required
High
User Interaction
None
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None
* Common Vulnerability Scoring System
SSVC
  • Decision:Track*
Exploitation
Poc
Automatable
No
Tech. Impact
Partial
* Organization's Worst-case Scenario
Timeline
  • 2024-08-16 CVE Reserved
  • 2024-10-15 CVE Published
  • 2024-11-05 CVE Updated
  • 2024-11-05 First Exploit
  • 2024-11-07 EPSS Updated
  • ---------- 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
Unknown
Search vendor "Unknown"
 Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin
Search vendor "Unknown" for product "Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin"
 < 1.6.7.55
Search vendor "Unknown" for product "Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin" and version " < 1.6.7.55"
en
Affected