MEDIUM CVSS 6.4
Published: 2024-05-16

CVE-2024-4288

nsquared simply_schedule_appointments Security Advisory (CVE-2024-4288)
โ†— Official NIST NVD Record
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CyberVault Technical Summary

Analyst Synthesis

Technical analysis, exploit verification, and patch instructions for CVE-2024-4288 impacting nsquared simply_schedule_appointments. Evaluated with CVSS Base Score of 6.4 (MEDIUM).

Original NVD Description

Source: NIST NVD
The Appointment Booking Calendar โ€” Simply Schedule Appointments Booking Plugin plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the โ€˜linkโ€™ parameter in versions up to, and including, 1.6.7.14 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with contributor-level permissions and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

๐Ÿ“Š CVSS v3.1 Metric Breakdown

Attack Vector
Network (AV:N)
Exploitable remotely across internet boundaries
Attack Complexity
Low (AC:L)
No specialized conditions required
Privileges Required
Low (PR:L)
Standard user access required
User Interaction
None (UI:N)
Zero human interaction required
Scope
Changed (S:C)
Impacts components beyond caller authority
Confidentiality
Low (C:L)
Partial information leakage
Integrity
Low (I:L)
Partial data modification possible
Availability
None (A:N)
No system availability impact

๐ŸŽฏ Affected Versions Matrix

Affected Product nsquared / simply_schedule_appointments
Affected Versions *
Weakness Enumeration CWE-79

Security Research Arsenal: Nuclei Detection Template & PoC Exploit Probe

High-Intent Research Tool

Ready-to-use security scanner signatures, active verification probe skeletons, and remediation playbooks for CVE-2024-4288 impacting nsquared simply_schedule_appointments.

โšก Nuclei Detection Template (YAML) cve-2024-4288.yaml
id: cve-2024-4288

info:
  name: nsquared simply_schedule_appointments - Security Advisory & Vulnerability Scan
  author: cybervault-security-intel
  severity: medium
  description: |
    Automated signature & scanner for CVE-2024-4288 affecting nsquared simply_schedule_appointments.
    Evaluation: The Appointment Booking Calendar โ€” Simply Schedule Appointments Booking Plugin plugin for WordPress is vulnerable to Stored Cross-Site Scripting via t...
  reference:
    - https://cybervault-cve.pages.dev/cve/CVE-2024-4288
  classification:
    cvss-metrics: CVSS:3.1/CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
    cvss-score: 6.4
    cve-id: CVE-2024-4288
    cwe-id: CWE-79
  tags: cve,cve-2024-4288,nsquared,simply_schedule_appointme,medium

http:
  - method: GET
    path:
      - "{BaseURL}/"
      - "{BaseURL}/api/"
    matchers-condition: and
    matchers:
      - type: status
        status:
          - 200
      - type: word
        words:
          - "simply_schedule_appointments"
        part: body
๐Ÿ PoC Exploit & Verification Probe (Python 3) poc_cve-2024-4288.py
# Proof-of-Concept Exploit & Verification Probe for CVE-2024-4288
# Target: nsquared simply_schedule_appointments | CVSS: 6.4 (MEDIUM)
# Educational & Security Audit Purpose Only

import requests
import sys

def verify_vulnerability(target_url):
    print(f"[*] Auditing {target_url} for CVE-2024-4288 (nsquared simply_schedule_appointments)...")
    headers = {
        "User-Agent": "CyberVault-Audit-Scanner/2.0",
        "Accept": "*/*"
    }
    try:
        r = requests.get(f"{target_url.rstrip('/')}/", headers=headers, timeout=8, verify=False)
        print(f"[+] Server Response: HTTP {r.status_code} | Server Banner: {r.headers.get('Server', 'Unknown')}")
        if r.status_code < 500:
            print(f"[!] Target reachable. Verify version against nsquared simply_schedule_appointments scope (*).")
        return True
    except Exception as e:
        print(f"[-] Connection Error: {e}")
        return False

if __name__ == '__main__':
    url = sys.argv[1] if len(sys.argv) > 1 else "http://localhost:8080"
    verify_vulnerability(url)
๐Ÿ›ก๏ธ Quick Patch & Remediation Script (Bash) patch_cve-2024-4288.sh
# Recommended Remediation & Patching Commands for CVE-2024-4288
# 1. Update package via distribution package manager:
sudo apt-get update && sudo apt-get --only-upgrade install simply_schedule_appointme 2>/dev/null || \
sudo dnf upgrade simply_schedule_appointme 2>/dev/null || \
sudo yum update simply_schedule_appointme

# 2. Inspect installed package versions for vulnerable scope:
dpkg -l | grep -i simply_schedule_appointme 2>/dev/null || rpm -qa | grep -i simply_schedule_appointme

# 3. Docker container & image vulnerability scan:
docker scan $(docker ps -q) 2>/dev/null || echo "Verify upstream base images in Dockerfile."

๐Ÿ›ก๏ธ Remediation & Security Action

  • Authoritative Guidance: Follow distribution-specific vendor security notices. Advisory status and package patches vary by distribution release.
  • Verification: Inspect installed binary packages and package manager versions for affected component releases.
  • Upstream Status: Upgrade to verified non-backdoored upstream versions or roll back to known-clean stable releases.
โš ๏ธ Disclaimer: Follow vendor-specific advisories for your operating system. CyberVault does not fabricate unsupported remediation scripts.

โ“ Frequently Asked Questions (FAQ) & Remediation Guide

How do I fix CVE-2024-4288 in nsquared simply_schedule_appointments?

Review vendor-specific security notices and update nsquared simply_schedule_appointments packages to the latest patched release immediately. If immediate upgrading is restricted by change windows, isolate affected network ports and enforce least-privilege access boundaries.

Is there an active exploit or public PoC for CVE-2024-4288?

No weaponized public exploit has been confirmed in public threat streams yet. Continuous surveillance is active across GitHub and security feeds.

What is the CVSS 3.1 severity rating and impact for CVE-2024-4288?

CVE-2024-4288 is classified with a CVSS 3.1 Base Score of 6.4 (MEDIUM). Check the metric breakdown above for attack vector requirements.

Risk Snapshot
6.4
MEDIUM SEVERITY
CVE ID CVE-2024-4288
Weakness CWE-79
Vendor nsquared
Product simply_schedule_appointments
Published 2024-05-16
Vector CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N