Comprehensive Technical Analysis of EUVD-2026-1916 (CVE-2025-63314)

Static Password Reset Token Vulnerability in DDSN Interactive Acora CMS v10.7.1

1. Vulnerability Assessment & Severity Evaluation

Vulnerability Overview

EUVD-2026-1916 (CVE-2025-63314) describes a critical authentication bypass vulnerability in DDSN Interactive Acora CMS v10.7.1, where the password reset mechanism uses a static (non-expiring, predictable, or reusable) token. This flaw allows attackers to arbitrarily reset user passwords and execute full account takeovers (ATO) via replay attacks.

CVSS v3.1 Severity Breakdown

Metric	Value	Explanation
Base Score	10.0 (Critical)	Highest possible severity due to complete authentication bypass.
Attack Vector (AV)	Network (N)	Exploitable remotely over the internet.
Attack Complexity (AC)	Low (L)	No special conditions required; trivial to exploit.
Privileges Required (PR)	None (N)	No prior authentication needed.
User Interaction (UI)	None (N)	No victim interaction required.
Scope (S)	Changed (C)	Impacts multiple users/systems beyond the vulnerable component.
Confidentiality (C)	High (H)	Attacker gains full access to sensitive user data.
Integrity (I)	High (H)	Attacker can modify user credentials and data.
Availability (A)	Low (L)	Limited direct impact on system availability.

Severity Justification

• Critical (10.0) due to:
  • Unauthenticated remote exploitation (AV:N/PR:N).
  • Full account takeover (C:H/I:H).
  • Low attack complexity (AC:L).
  • No user interaction required (UI:N).
  • Changed scope (S:C), enabling lateral movement or mass exploitation.

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2. Potential Attack Vectors & Exploitation Methods

Exploitation Scenarios

A. Password Reset Token Replay Attack

1. Token Discovery

   • Attacker identifies a valid password reset token (e.g., via:
     • Network interception (MITM, unencrypted HTTP).
     • Log files (if tokens are logged).
     • Predictable token generation (e.g., sequential, time-based, or weak entropy).
     • Brute-force (if token space is small).

2. Token Reuse

   • The static token remains valid indefinitely or for an extended period.
   • Attacker submits the same token to reset a victim’s password without their knowledge.

3. Account Takeover

   • Attacker sets a new password, logs in, and gains full control over the victim’s account.

B. Mass Account Compromise

• If tokens are predictable or shared across users, an attacker could:
  • Brute-force tokens for multiple accounts.
  • Automate attacks using scripts (e.g., Python, Burp Suite).
  • Target high-privilege accounts (admins, executives).

C. Chained Exploits

• Session Hijacking: After ATO, attacker may steal session cookies.
• Privilege Escalation: If the compromised account has admin rights, attacker could gain full CMS control.
• Data Exfiltration: Access sensitive content (PII, financial data, internal documents).

Proof-of-Concept (PoC) Exploitation

A GitHub repository (padayali-JD/CVE-2025-63314) likely contains:

• Exploit code (e.g., Python script to automate token replay).
• Token generation analysis (if tokens are predictable).
• Burp Suite/Postman requests for manual exploitation.

Example Attack Flow:

POST /password-reset HTTP/1.1
Host: vulnerable-cms.example.com
Content-Type: application/x-www-form-urlencoded

token=STATIC_TOKEN_123&new_password=attacker123

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3. Affected Systems & Software Versions

Vulnerable Product

• DDSN Interactive Acora CMS v10.7.1
  • Vendor: DDSN Interactive (ddsn.com)
  • Product: Acora CMS (Content Management System)
  • Version: 10.7.1 (and possibly earlier unpatched versions)

Scope of Impact

• Websites & Web Applications using Acora CMS v10.7.1.
• European Organizations (given EUVD listing):
  • Government portals.
  • Corporate websites (e.g., finance, healthcare, e-commerce).
  • Educational institutions.
• Third-Party Integrations: If Acora CMS is used as a backend for other services.

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4. Recommended Mitigation Strategies

Immediate Actions (Patch & Workarounds)

Mitigation	Details	Effectiveness
Apply Vendor Patch	Upgrade to Acora CMS v10.7.2+ (or latest secure version).	High (Permanent fix)
Disable Password Reset Function	Temporarily disable the feature until patched.	Medium (Disrupts user experience)
Rate-Limiting & WAF Rules	- Block excessive password reset requests. - Use ModSecurity/OWASP CRS to detect token replay.	Medium (Reduces attack surface)
Token Expiry & Uniqueness	- Enforce short-lived tokens (e.g., 15-30 minutes). - Use cryptographically secure random tokens (e.g., UUIDv4, 256-bit entropy).	High (Prevents replay)
Multi-Factor Authentication (MFA)	Enforce MFA for password resets to prevent ATO.	High (Adds defense-in-depth)

Long-Term Security Hardening

1. Secure Token Generation
   • Use CSPRNG (Cryptographically Secure Pseudorandom Number Generator).
   • Example (PHP):

     $token = bin2hex(random_bytes(32)); // 256-bit token
     

2. Token Storage & Validation
   • Store tokens hashed (e.g., bcrypt, Argon2) in the database.
   • One-time-use only (delete token after first use).
3. Logging & Monitoring
   • Log all password reset attempts (success/failure).
   • Alert on multiple failed token submissions.
4. Security Headers & HTTPS
   • Enforce HSTS and secure cookies.
   • Use TLS 1.2+ to prevent MITM token interception.
5. Regular Security Audits
   • Conduct penetration testing and code reviews for authentication flaws.

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5. Impact on European Cybersecurity Landscape

Regulatory & Compliance Risks

• GDPR (General Data Protection Regulation)

  • Article 32: Requires "appropriate technical measures" to secure personal data.
  • Article 33: Mandates 72-hour breach notification if ATO leads to data exposure.
  • Fines: Up to €20M or 4% of global revenue (whichever is higher).

• NIS2 Directive (Network and Information Security)

  • Applies to critical infrastructure (e.g., energy, healthcare, finance).
  • Requires incident reporting and risk management for CMS vulnerabilities.

• DORA (Digital Operational Resilience Act)

  • Financial institutions must ensure ICT security and third-party risk management.

Threat Landscape Implications

• Increased ATO Attacks: Static tokens are low-hanging fruit for cybercriminals.
• Ransomware & Extortion: Compromised admin accounts could lead to data encryption or leak threats.
• Supply Chain Risks: If Acora CMS is used by EU government agencies, this could enable state-sponsored espionage.
• Reputation Damage: Organizations failing to patch may face public distrust and customer churn.

ENISA & CERT-EU Response

• ENISA (European Union Agency for Cybersecurity) may issue alerts for critical infrastructure operators.
• CERT-EU could provide indicators of compromise (IoCs) and detection rules.
• National CSIRTs (e.g., Germany’s BSI, France’s ANSSI) may coordinate patching efforts.

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6. Technical Details for Security Professionals

Root Cause Analysis

• Static Token Flaw: The password reset token is not dynamically generated per request or does not expire.
• Possible Implementation Issues:
  • Hardcoded tokens (e.g., token=12345).
  • Predictable tokens (e.g., token=username+timestamp).
  • Reusable tokens (same token works multiple times).
  • Missing token validation (server does not verify token uniqueness).

Exploitation Requirements

Requirement	Details
Network Access	Remote (internet-facing CMS).
Tools Needed	- Burp Suite / OWASP ZAP (for manual testing). - Python / cURL (for automation). - Wireshark (for token interception).
Skills Required	Low to Medium (basic web app security knowledge).
Exploit Availability	Public PoC likely available (GitHub reference).

Detection & Forensics

Indicators of Compromise (IoCs)

• Logs:
  • Multiple password reset requests with the same token.
  • Unusual IP addresses accessing /password-reset.
  • Failed login attempts followed by successful resets.
• Network Traffic:
  • HTTP POST requests to /password-reset with static tokens.
  • Unencrypted traffic (if HTTPS is not enforced).

Forensic Investigation Steps

1. Check Web Server Logs for:

   grep "POST /password-reset" /var/log/apache2/access.log
   

2. Database Analysis:
   • Query the password_reset_tokens table for reused tokens.
   • Check for unexpected password changes.
3. Memory Forensics (if advanced):
   • Use Volatility to detect in-memory token leaks.

Secure Coding Recommendations

• Token Generation:

  import secrets
  token = secrets.token_urlsafe(32)  # 256-bit URL-safe token
  

• Token Storage:

  CREATE TABLE password_reset_tokens (
      user_id INT,
      token_hash VARCHAR(255),  -- Store bcrypt hash
      expires_at DATETIME,
      used BOOLEAN DEFAULT FALSE
  );
  

• Token Validation:

  $token = $_POST['token'];
  $storedHash = getTokenHashFromDB($userId);
  
  if (password_verify($token, $storedHash) && !isTokenExpired($userId)) {
      resetPassword($userId, $_POST['new_password']);
      markTokenAsUsed($userId);
  }
  

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Conclusion & Actionable Recommendations

Summary of Key Findings

• Critical (10.0) authentication bypass in Acora CMS v10.7.1.
• Exploitable via replay attacks with no authentication required.
• High risk of ATO, data breaches, and regulatory penalties.
• Public PoC available, increasing exploitation likelihood.

Immediate Actions for Organizations

1. Patch Immediately: Upgrade to Acora CMS v10.7.2+.
2. Temporarily Disable Password Reset if patching is delayed.
3. Monitor for Exploitation: Check logs for reused tokens.
4. Enforce MFA for all privileged accounts.
5. Conduct a Security Audit: Review authentication mechanisms for similar flaws.

Long-Term Security Improvements

• Adopt a Secure SDLC (e.g., OWASP SAMM).
• Implement Continuous Monitoring (SIEM, EDR).
• Train Developers on secure coding practices (e.g., OWASP Top 10).
• Engage in Bug Bounty Programs to incentivize vulnerability disclosure.

Final Risk Assessment

Factor	Risk Level	Justification
Exploitability	Critical	Public PoC, low skill required.
Impact	Critical	Full ATO, data breaches, regulatory fines.
Likelihood	High	Widespread CMS usage, no authentication needed.
Overall Risk	Critical	Immediate action required.

Organizations using Acora CMS v10.7.1 must treat this as a top-priority security incident and remediate without delay.