MEDIUM CVSS 5.5
Published: 2025-07-14

CVE-2025-51651

chshcms mccms Security Advisory (CVE-2025-51651)
↗ Official NIST NVD Record
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CyberVault Technical Summary

Analyst Synthesis

Technical analysis, exploit verification, and patch instructions for CVE-2025-51651 impacting chshcms mccms. Evaluated with CVSS Base Score of 5.5 (MEDIUM).

Original NVD Description

Source: NIST NVD
An authenticated arbitrary file download vulnerability in the component /admin/Backups.php of Mccms v2.7.0 allows attackers to download arbitrary files via a crafted GET request.

📊 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
Required (UI:R)
User must click or open resource
Scope
Unchanged (S:U)
Confined to same security context
Confidentiality
Low (C:L)
Partial information leakage
Integrity
Low (I:L)
Partial data modification possible
Availability
Low (A:L)
Partial service performance degradation

🎯 Affected Versions Matrix

Affected Product chshcms / mccms
Affected Versions 2.7
Weakness Enumeration CWE-598

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-2025-51651 impacting chshcms mccms.

⚡ Nuclei Detection Template (YAML) cve-2025-51651.yaml
id: cve-2025-51651

info:
  name: chshcms mccms - Security Advisory & Vulnerability Scan
  author: cybervault-security-intel
  severity: medium
  description: |
    Automated signature & scanner for CVE-2025-51651 affecting chshcms mccms.
    Evaluation: An authenticated arbitrary file download vulnerability in the component /admin/Backups.php of Mccms v2.7.0 allows attackers to download arbitrary file...
  reference:
    - https://cybervault-cve.pages.dev/cve/CVE-2025-51651
  classification:
    cvss-metrics: CVSS:3.1/CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:L
    cvss-score: 5.5
    cve-id: CVE-2025-51651
    cwe-id: CWE-598
  tags: cve,cve-2025-51651,chshcms,mccms,medium

http:
  - method: GET
    path:
      - "{BaseURL}/"
      - "{BaseURL}/api/"
    matchers-condition: and
    matchers:
      - type: status
        status:
          - 200
      - type: word
        words:
          - "mccms"
        part: body
🐍 PoC Exploit & Verification Probe (Python 3) poc_cve-2025-51651.py
# Proof-of-Concept Exploit & Verification Probe for CVE-2025-51651
# Target: chshcms mccms | CVSS: 5.5 (MEDIUM)
# Educational & Security Audit Purpose Only

import requests
import sys

def verify_vulnerability(target_url):
    print(f"[*] Auditing {target_url} for CVE-2025-51651 (chshcms mccms)...")
    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 chshcms mccms scope (2.7).")
        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-2025-51651.sh
# Recommended Remediation & Patching Commands for CVE-2025-51651
# 1. Update package via distribution package manager:
sudo apt-get update && sudo apt-get --only-upgrade install mccms 2>/dev/null || \
sudo dnf upgrade mccms 2>/dev/null || \
sudo yum update mccms

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

# 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.

🔗 Verified Technical References

Authorities
  • No records filed in this category.
Distributions
  • No records filed in this category.

❓ Frequently Asked Questions (FAQ) & Remediation Guide

How do I fix CVE-2025-51651 in chshcms mccms?

Review vendor-specific security notices and update chshcms mccms 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-2025-51651?

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-2025-51651?

CVE-2025-51651 is classified with a CVSS 3.1 Base Score of 5.5 (MEDIUM). Check the metric breakdown above for attack vector requirements.

Risk Snapshot
5.5
MEDIUM SEVERITY
CVE ID CVE-2025-51651
Weakness CWE-598
Vendor chshcms
Product mccms
Published 2025-07-14
Vector CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:L