UNKNOWN CVSS 4.3
Published: 2011-12-16

CVE-2011-4764

parallels parallels_plesk_small_business_panel Security Advisory (CVE-2011-4764)
↗ Official NIST NVD Record
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CyberVault Technical Summary

Analyst Synthesis

Technical analysis, exploit verification, and patch instructions for CVE-2011-4764 impacting parallels parallels_plesk_small_business_panel. Evaluated with CVSS Base Score of 4.3 (UNKNOWN).

Original NVD Description

Source: NIST NVD
Multiple cross-site scripting (XSS) vulnerabilities in the Site Editor (aka SiteBuilder) feature in Parallels Plesk Small Business Panel 10.2.0 allow remote attackers to inject arbitrary web script or HTML via crafted input to a PHP script, as demonstrated by Wizard/Edit/Modules/Image and certain other files.

📊 CVSS v3.1 Metric Breakdown

Attack Vector
Network (AV:N)
Exploitable remotely across internet boundaries
Confidentiality
None (C:N)
No data confidentiality impact
Availability
None (A:N)
No system availability impact

🎯 Affected Versions Matrix

Affected Product parallels / parallels_plesk_small_business_panel
Affected Versions 10.2.0
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-2011-4764 impacting parallels parallels_plesk_small_business_panel.

⚡ Nuclei Detection Template (YAML) cve-2011-4764.yaml
id: cve-2011-4764

info:
  name: parallels parallels_plesk_small_business_panel - Security Advisory & Vulnerability Scan
  author: cybervault-security-intel
  severity: unknown
  description: |
    Automated signature & scanner for CVE-2011-4764 affecting parallels parallels_plesk_small_business_panel.
    Evaluation: Multiple cross-site scripting (XSS) vulnerabilities in the Site Editor (aka SiteBuilder) feature in Parallels Plesk Small Business Panel 10.2.0 allow ...
  reference:
    - https://cybervault-cve.pages.dev/cve/CVE-2011-4764
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:M/Au:N/C:N/I:P/A:N
    cvss-score: 4.3
    cve-id: CVE-2011-4764
    cwe-id: CWE-79
  tags: cve,cve-2011-4764,parallels,parallels_plesk_small_bus,unknown

http:
  - method: GET
    path:
      - "{BaseURL}/"
      - "{BaseURL}/api/"
    matchers-condition: and
    matchers:
      - type: status
        status:
          - 200
      - type: word
        words:
          - "parallels_plesk_small_business_panel"
        part: body
🐍 PoC Exploit & Verification Probe (Python 3) poc_cve-2011-4764.py
# Proof-of-Concept Exploit & Verification Probe for CVE-2011-4764
# Target: parallels parallels_plesk_small_business_panel | CVSS: 4.3 (UNKNOWN)
# Educational & Security Audit Purpose Only

import requests
import sys

def verify_vulnerability(target_url):
    print(f"[*] Auditing {target_url} for CVE-2011-4764 (parallels parallels_plesk_small_business_panel)...")
    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 parallels parallels_plesk_small_business_panel scope (10.2.0).")
        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)
🛡️ Quick Patch & Remediation Script (Bash) patch_cve-2011-4764.sh
# Recommended Remediation & Patching Commands for CVE-2011-4764
# 1. Update package via distribution package manager:
sudo apt-get update && sudo apt-get --only-upgrade install parallels_plesk_small_bus 2>/dev/null || \
sudo dnf upgrade parallels_plesk_small_bus 2>/dev/null || \
sudo yum update parallels_plesk_small_bus

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

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

🛡️ 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.
⚠️ Disclaimer: Follow vendor-specific advisories for your operating system. CyberVault does not fabricate unsupported remediation scripts.

❓ Frequently Asked Questions (FAQ) & Remediation Guide

How do I fix CVE-2011-4764 in parallels parallels_plesk_small_business_panel?

Review vendor-specific security notices and update parallels parallels_plesk_small_business_panel 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-2011-4764?

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-2011-4764?

CVE-2011-4764 is classified with a CVSS 3.1 Base Score of 4.3 (UNKNOWN). Check the metric breakdown above for attack vector requirements.

Risk Snapshot
4.3
UNKNOWN SEVERITY
CVE ID CVE-2011-4764
Weakness CWE-79
Vendor parallels
Product parallels_plesk_small_business_panel
Published 2011-12-16
Vector AV:N/AC:M/Au:N/C:N/I:P/A:N