Cross-Site Scripting Flaws in Appointment Booking Calendar Could Lead to High Privilege Attacks
CVE-2024-7877

4.8MEDIUM

Key Information:

Vendor
Wordpress
Status
Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin
Vendor
CVE Published:
5 November 2024

Badges

👾 Exploit Exists🟡 Public PoC

Summary

A security vulnerability in the Simply Schedule Appointments Booking Plugin for WordPress has been identified, where certain Notification settings fail to properly sanitize and escape input from high privilege users, such as administrators. This oversight can lead to Cross-Site Scripting (XSS) attacks, even when the setting to disallow unfiltered HTML is enabled. Attackers exploiting this vulnerability may inject malicious scripts that execute in the context of the affected user’s browser, potentially compromising sensitive information or redirecting users to harmful sites.

Affected Version(s)

Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin 0 < 1.6.7.55

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2024-7877 - Proof of Concept

References

https://wpscan.com/vulnerability/fbec3738-2135-458d-be25-...
exploitvdb-entrytechnical-description

CVSS V3.1

Score:
4.8
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
High
User Interaction:
Required
Scope:
Changed

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Jeewan Kumar Bhatta
WPScan
.