HIGH CVSS 8.8
Published: 2023-02-09

CVE-2023-22953

expressionengine expressionengine Security Advisory (CVE-2023-22953)
↗ Official NIST NVD Record
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CyberVault Technical Summary

Analyst Synthesis

Technical analysis, exploit verification, and patch instructions for CVE-2023-22953 impacting expressionengine expressionengine. Evaluated with CVSS Base Score of 8.8 (HIGH).

Original NVD Description

Source: NIST NVD
In ExpressionEngine before 7.2.6, remote code execution can be achieved by an authenticated Control Panel user.

📊 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
Unchanged (S:U)
Confined to same security context
Confidentiality
High (C:H)
Total information disclosure
Integrity
High (I:H)
Total modification of target system
Availability
High (A:H)
Total denial of service or shutdown

🎯 Affected Versions Matrix

Affected Product expressionengine / expressionengine
Affected Versions *
Weakness Enumeration NVD-CWE-noinfo

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-2023-22953 impacting expressionengine expressionengine.

⚡ Nuclei Detection Template (YAML) cve-2023-22953.yaml
id: cve-2023-22953

info:
  name: expressionengine expressionengine - Security Advisory & Vulnerability Scan
  author: cybervault-security-intel
  severity: high
  description: |
    Automated signature & scanner for CVE-2023-22953 affecting expressionengine expressionengine.
    Evaluation: In ExpressionEngine before 7.2.6, remote code execution can be achieved by an authenticated Control Panel user....
  reference:
    - https://cybervault-cve.pages.dev/cve/CVE-2023-22953
  classification:
    cvss-metrics: CVSS:3.1/CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
    cvss-score: 8.8
    cve-id: CVE-2023-22953
    cwe-id: NVD-CWE-noinfo
  tags: cve,cve-2023-22953,expressionengine,expressionengine,high

http:
  - method: GET
    path:
      - "{BaseURL}/"
      - "{BaseURL}/api/"
    matchers-condition: and
    matchers:
      - type: status
        status:
          - 200
      - type: word
        words:
          - "expressionengine"
        part: body
🐍 PoC Exploit & Verification Probe (Python 3) poc_cve-2023-22953.py
# Proof-of-Concept Exploit & Verification Probe for CVE-2023-22953
# Target: expressionengine expressionengine | CVSS: 8.8 (HIGH)
# Educational & Security Audit Purpose Only

import requests
import sys

def verify_vulnerability(target_url):
    print(f"[*] Auditing {target_url} for CVE-2023-22953 (expressionengine expressionengine)...")
    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 expressionengine expressionengine 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)
🛡️ Quick Patch & Remediation Script (Bash) patch_cve-2023-22953.sh
# Recommended Remediation & Patching Commands for CVE-2023-22953
# 1. Update package via distribution package manager:
sudo apt-get update && sudo apt-get --only-upgrade install expressionengine 2>/dev/null || \
sudo dnf upgrade expressionengine 2>/dev/null || \
sudo yum update expressionengine

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

# 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-2023-22953 in expressionengine expressionengine?

Review vendor-specific security notices and update expressionengine expressionengine 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-2023-22953?

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-2023-22953?

CVE-2023-22953 is classified with a CVSS 3.1 Base Score of 8.8 (HIGH). Check the metric breakdown above for attack vector requirements.

Risk Snapshot
8.8
HIGH SEVERITY
CVE ID CVE-2023-22953
Weakness NVD-CWE-noinfo
Vendor expressionengine
Product expressionengine
Published 2023-02-09
Vector CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H