Unfiltered HTML Settings Vulnerability in Appointment Booking Calendar
CVE-2024-7876

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

The Appointment Booking Calendar integrated with the Simply Schedule Appointments Booking Plugin for WordPress reveals security flaws related to inadequate sanitization and escaping of its Appointment Type settings. This vulnerability is particularly concerning for users with high privileges, such as administrators, as it opens avenues for Cross-Site Scripting (XSS) attacks. Even in cases where unfiltered HTML is disabled, the lack of proper input sanitization can enable attackers to manipulate the affected plugin, potentially compromising the security of the WordPress site and its users.

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-2024-7876 - Proof of Concept

References

https://wpscan.com/vulnerability/fffe862f-5bf0-4a05-9d32-...
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
.