CVE-2026-22679: Weaver E-cology Unauthenticated RCE via dubboApi Debug Endpoint

TL;DR

Weaver E-cology 10.0 (prior to build 20260312) contains a critical unauthenticated remote code execution vulnerability in the /papi/esearch/data/devops/dubboApi/debug/method endpoint. Attackers can inject arbitrary commands through the interfaceName and methodName POST parameters without authentication, achieving complete system compromise. Active exploitation detected since 2026-03-31 by Shadowserver Foundation.

Quick Risk: CVSS 9.3 - Completely unauthenticated, no user interaction required, network accessible endpoint leading directly to code execution.

Quick Facts
What is Weaver E-cology
Vulnerability Deep Dive
Impact Analysis
Affected Versions
Detection
- Python Scanner
- Nmap NSE Script
Indicators of Compromise
Remediation
References
Author

Quick Facts

What is Weaver E-cology?

Weaver E-cology is one of China's most widely deployed enterprise OA (Office Automation) and collaboration platforms. Developed by Fanwei Group, it is extensively used across:

Government Agencies: Central and provincial government departments
Large Enterprises: Fortune 500 companies and state-owned enterprises
Financial Institutions: Banks, insurance companies, and investment firms
Educational Institutions: Universities and research organizations across Asia

Key Capabilities

E-cology provides comprehensive enterprise solutions including:

Document Management: Secure storage, versioning, and retrieval of enterprise documents
Workflow Automation: Business process automation, approval chains, and task routing
Human Resources: Employee management, payroll integration, and organizational hierarchies
Collaboration Tools: Email, instant messaging, calendars, and project management
Portal Services: Customizable enterprise portals and dashboards

Deployment Footprint

E-cology deployments typically range from hundreds to thousands of users per organization. The platform is a critical infrastructure component for many organizations, making vulnerabilities in it extremely high impact.

Vulnerability Deep Dive

Root Cause Analysis

The vulnerability exists in the dubboApi debug endpoint, which was likely left accessible for development and troubleshooting purposes. The endpoint allows direct invocation of arbitrary methods through the Dubbo RPC framework without proper input validation or authentication checks.

Vulnerable Code Pattern:

POST /papi/esearch/data/devops/dubboApi/debug/method HTTP/1.1
Host: target.com
Content-Type: application/json

{
  "interfaceName": "com.weaver.rpc.InvokeCommand",
  "methodName": "executeCommand",
  "parameters": ["id", "whoami", "cat /etc/passwd"]
}

The application directly processes these parameters and passes them to RPC command execution helpers without:

Authentication verification
Input validation/sanitization
Method whitelist enforcement
Parameter type checking

This allows attackers to specify arbitrary Dubbo interface methods that execute system commands.

Attack Flow Diagram

Internet Attacker
    |
    | Sends unauthenticated POST request
    | with malicious interfaceName/methodName
    v
Weaver E-cology HTTP Server (port 80/443)
    |
    | No authentication check
    | No authorization validation
    v
/papi/esearch/data/devops/dubboApi/debug/method endpoint
    |
    | Direct parameter pass-through to Dubbo RPC layer
    v
Dubbo RPC Framework (unvalidated interface invocation)
    |
    | Resolves arbitrary interface methods
    | Attacker-controlled method name injection
    v
Command Execution Helpers (vulnerable classes)
    |
    | Direct OS command execution via Runtime.exec()
    | or similar OS command invocation mechanisms
    v
System Command Execution
    |
    | Complete code execution as Weaver service user
    | (typically root or high-privilege account)
    |
    +-> Read sensitive files (/etc/passwd, configs)
    +-> Execute arbitrary binaries
    +-> Create reverse shells
    +-> Exfiltrate data
    +-> Establish persistence
    v
Complete System Compromise

Vulnerable Endpoint Details

Endpoint Path: /papi/esearch/data/devops/dubboApi/debug/method

HTTP Method: POST

Required Authentication: None (zero authentication)

Required Headers: Standard HTTP headers (no special tokens or cookies required)

Request Body Parameters:

Endpoint Exposure Flow:

Weaver Deployment Architecture
===============================

Internet
  |
  v
Firewall (often misconfigured or open for "accessibility")
  |
  v
Web Server (port 80/443)
  |
  +--------> HTTP Request to any path
  |
  v
Route Dispatcher
  |
  +---> /login/Login.jsp > Requires authentication
  |
  +---> /wui/index.html > Requires authentication
  |
  +---> /papi/esearch/data/devops/dubboApi/debug/method
           |
           +---> UNPROTECTED - No authentication check!
                 |
                 v
           Dubbo RPC Invoker (unrestricted method invocation)
                 |
                 v
           OS Command Execution
                 |
                 v
           System Compromise (RCE as web user)

Typical Weaver Deployment Architecture

Corporate Network
=================

Internet > Firewall (port 80/443 open for E-cology)
              |
              v
        Load Balancer (optional)
              |
    +---------+---------+
    |         |         |
    v         v         v
 Node1      Node2     Node3
  Web        Web       Web
 Server      Server    Server
  |          |         |
  +----------+----+----+
               |
               v
         Shared Storage
         (Documents/Config)
               |
               v
         Database Server
         (MySQL/Oracle)

Each Web Server has:
- Weaver E-cology Java application
- Embedded Tomcat/JBoss container
- Dubbo RPC framework
- VULNERABLE /papi/esearch/data/devops/dubboApi/debug/method
  endpoint (pre-patch)

Impact Analysis

Severity Assessment

Real-World Attack Scenarios

Scenario 1: Government Data Breach

A nation-state or criminal group exploits E-cology deployments at government agencies to:

Access classified documents and communications
Exfiltrate citizen personal data
Modify government records
Establish persistent backdoors for long-term access

Scenario 2: Financial System Compromise

Attackers compromise E-cology instances at banks or financial institutions to:

Access customer account information and transaction logs
Modify financial records
Execute unauthorized fund transfers
Install payment processing malware

Scenario 3: Supply Chain Attack

Compromised E-cology instances are used as pivot points to:

Access interconnected enterprise systems
Spread laterally through corporate networks
Establish persistence on critical infrastructure
Facilitate multi-stage Advanced Persistent Threat (APT) campaigns

Affected Versions

Note: Other versions may be affected. Weaver has not released comprehensive version compatibility information. Organizations should test patches thoroughly before deployment.

Detection

Python Scanner

Filename: CVE-2026-22679_Weaver_Ecology_RCE_detector.py

Description: Safe, non-destructive detection script that identifies vulnerable Weaver E-cology instances by checking for endpoint accessibility.

#!/usr/bin/env python3
"""
CVE-2026-22679 Weaver E-cology RCE Detection Scanner
Detects vulnerable dubboApi debug endpoint exposure
Author: Kerem Oruc (@keraattin)
"""

import requests
import argparse
import sys
from datetime import datetime
from urllib.parse import urljoin
import json

class WeaverEcologyScanner:
    def __init__(self, timeout=10, verify_ssl=False):
        self.timeout = timeout
        self.verify_ssl = verify_ssl
        self.vulnerable_endpoint = "/papi/esearch/data/devops/dubboApi/debug/method"
        self.weaver_identifiers = [
            "/login/Login.jsp",
            "/wui/index.html",
            "/UploadFiles/",
        ]
        
    def is_weaver_ecology(self, base_url):
        """Identify if target is Weaver E-cology instance"""
        for path in self.weaver_identifiers:
            try:
                url = urljoin(base_url, path)
                response = requests.get(
                    url,
                    timeout=self.timeout,
                    verify=self.verify_ssl,
                    allow_redirects=False
                )
                if response.status_code in [200, 302, 301]:
                    return True
            except:
                continue
        return False
    
    def check_vulnerability(self, base_url):
        """Check if dubboApi debug endpoint is accessible"""
        try:
            url = urljoin(base_url, self.vulnerable_endpoint)
            
            # Test with GET request
            response = requests.get(
                url,
                timeout=self.timeout,
                verify=self.verify_ssl,
                allow_redirects=False
            )
            
            # 200 (success), 405 (method not allowed), or 400 (bad request)
            # all indicate endpoint exists
            if response.status_code in [200, 400, 405]:
                return True, response.status_code
            
            # Test with POST request as fallback
            response = requests.post(
                url,
                json={},
                timeout=self.timeout,
                verify=self.verify_ssl,
                allow_redirects=False
            )
            
            if response.status_code in [200, 400, 405]:
                return True, response.status_code
            
            return False, response.status_code
            
        except requests.exceptions.RequestException:
            return False, None
    
    def scan_target(self, base_url):
        """Scan single target"""
        result = {
            "target": base_url,
            "timestamp": datetime.utcnow().isoformat() + "Z",
            "is_weaver": False,
            "vulnerable": False,
            "endpoint_status": None,
            "risk_level": "LOW"
        }
        
        # Normalize URL
        if not base_url.startswith(("http://", "https://")):
            base_url = "http://" + base_url
        
        # Check if Weaver E-cology
        is_weaver = self.is_weaver_ecology(base_url)
        result["is_weaver"] = is_weaver
        
        if not is_weaver:
            result["risk_level"] = "LOW"
            return result
        
        # Check vulnerability
        is_vulnerable, status_code = self.check_vulnerability(base_url)
        result["endpoint_status"] = status_code
        result["vulnerable"] = is_vulnerable
        
        if is_vulnerable:
            result["risk_level"] = "CRITICAL"
        else:
            result["risk_level"] = "UNKNOWN"
        
        return result
    
    def format_report(self, results):
        """Format scan results for display"""
        report = []
        report.append("\n[*] CVE-2026-22679 Weaver E-cology RCE Detection Scanner")
        report.append(f"[*] Scanning {len(results)} target(s)...")
        report.append("[*] Detection method: dubboApi debug endpoint accessibility check")
        report.append(f"[*] Endpoint: {self.vulnerable_endpoint}")
        report.append("[*] NOTE: No commands are executed. Safe, non-destructive scan.\n")
        report.append("=" * 70)
        
        for result in results:
            report.append(f"\nTarget: {result['target']}")
            report.append(f"Scan Time: {result['timestamp']}")
            report.append(f"Risk Level: {result['risk_level']}")
            report.append("=" * 70)
            report.append(f"  Is Weaver E-cology:    {'YES' if result['is_weaver'] else 'NO'}")
            report.append(f"  Debug Endpoint:        {'ACCESSIBLE' if result['vulnerable'] else 'NOT ACCESSIBLE'}")
            report.append(f"  Endpoint HTTP Status:  {result['endpoint_status']}")
            report.append(f"  Vulnerable:            {'YES' if result['vulnerable'] else 'NO'}")
            
            if result["vulnerable"]:
                report.append("")
                report.append("  *** CRITICAL: dubboApi debug endpoint is exposed! ***")
                report.append("  *** Unauthenticated RCE via interfaceName/methodName injection ***")
                report.append(f"  *** Endpoint: {self.vulnerable_endpoint} ***")
                report.append("  *** Update to build 20260312 or block this endpoint immediately ***")
        
        report.append("\n" + "=" * 70)
        return "\n".join(report)

def main():
    parser = argparse.ArgumentParser(
        description="CVE-2026-22679 Weaver E-cology RCE Detection Scanner"
    )
    parser.add_argument("targets", nargs="+", help="Target URL(s) to scan (e.g., http://target.com)")
    parser.add_argument("--timeout", type=int, default=10, help="Request timeout in seconds")
    parser.add_argument("--no-verify-ssl", action="store_true", help="Disable SSL verification")
    
    args = parser.parse_args()
    
    scanner = WeaverEcologyScanner(timeout=args.timeout, verify_ssl=not args.no_verify_ssl)
    
    results = []
    for target in args.targets:
        result = scanner.scan_target(target)
        results.append(result)
    
    print(scanner.format_report(results))
    
    # Exit with error if any vulnerabilities found
    if any(r["vulnerable"] for r in results):
        sys.exit(1)
    sys.exit(0)

if __name__ == "__main__":
    main()

Usage Examples:

# Scan single target
python3 CVE-2026-22679_Weaver_Ecology_RCE_detector.py http://target.com

# Scan multiple targets
python3 CVE-2026-22679_Weaver_Ecology_RCE_detector.py http://target1.com http://target2.com

# Scan with custom timeout
python3 CVE-2026-22679_Weaver_Ecology_RCE_detector.py http://target.com --timeout 5

# Scan with SSL verification disabled
python3 CVE-2026-22679_Weaver_Ecology_RCE_detector.py https://target.com --no-verify-ssl

Example Output:

[*] CVE-2026-22679 Weaver E-cology RCE Detection Scanner
[*] Scanning 1 target(s)...
[*] Detection method: dubboApi debug endpoint accessibility check
[*] Endpoint: /papi/esearch/data/devops/dubboApi/debug/method
[*] NOTE: No commands are executed. Safe, non-destructive scan.

======================================================================
Target: http://10.0.0.10
Scan Time: 2026-04-15T12:00:00Z
Risk Level: CRITICAL
======================================================================
  Is Weaver E-cology:    YES
  Debug Endpoint:        ACCESSIBLE
  Endpoint HTTP Status:  200
  Vulnerable:            YES

  *** CRITICAL: dubboApi debug endpoint is exposed! ***
  *** Unauthenticated RCE via interfaceName/methodName injection ***
  *** Endpoint: /papi/esearch/data/devops/dubboApi/debug/method ***
  *** Update to build 20260312 or block this endpoint immediately ***

======================================================================

Nmap NSE Script

Filename: CVE-2026-22679_Weaver_Ecology_RCE.nse

Description: Nmap NSE script for vulnerability detection integrated with Nmap workflows.

-- CVE-2026-22679 Weaver E-cology RCE Detection Script
-- Detects vulnerable dubboApi debug endpoint exposure
-- Author: Kerem Oruc (@keraattin)

local http = require "http"
local shortport = require "shortport"
local stdnse = require "stdnse"
local vulns = require "vulns"

description = [[
Detects Weaver E-cology instances vulnerable to CVE-2026-22679.
This vulnerability allows unauthenticated remote code execution through
the exposed dubboApi debug endpoint at /papi/esearch/data/devops/dubboApi/debug/method
]]

author = "Kerem Oruc (@keraattin)"
license = "Same as Nmap--See https://nmap.org/COPYING"
categories = {"vuln", "safe"}

portrule = shortport.http

local VULNERABLE_ENDPOINT = "/papi/esearch/data/devops/dubboApi/debug/method"
local WEAVER_IDENTIFIERS = {
  "/login/Login.jsp",
  "/wui/index.html",
  "/UploadFiles/"
}

local function is_weaver_ecology(host, port)
  for _, path in ipairs(WEAVER_IDENTIFIERS) do
    local response = http.get(host, port, path)
    if response.status and response.status >= 200 and response.status < 400 then
      return true
    end
  end
  return false
end

local function check_vulnerability(host, port)
  local response = http.get(host, port, VULNERABLE_ENDPOINT)
  
  if response.status then
    -- 200 (OK), 400 (Bad Request), 405 (Method Not Allowed)
    -- all indicate the endpoint exists (unpatched)
    if response.status == 200 or response.status == 400 or response.status == 405 then
      return true, response.status
    end
  end
  
  -- Try POST as fallback
  local response = http.post(host, port, VULNERABLE_ENDPOINT, nil, {}, "")
  if response.status then
    if response.status == 200 or response.status == 400 or response.status == 405 then
      return true, response.status
    end
  end
  
  return false, response.status or "unknown"
end

action = function(host, port)
  local vuln_table = {
    title = "Weaver E-cology Unauthenticated RCE (CVE-2026-22679)",
    state = vulns.STATE.UNKNOWN,
    risk_level = "CRITICAL",
    IDS = {
      CVE = "CVE-2026-22679",
      CWE = "CWE-94"
    },
    description = [[
The dubboApi debug endpoint is exposed without authentication.
An attacker can send POST requests with crafted parameters to
achieve remote code execution through parameter injection.
    ]],
    references = {
      "https://nvd.nist.gov/vuln/detail/CVE-2026-22679",
    },
    dates = {
      disclosure = {year = 2026, month = 3, day = 31},
      discovery = {year = 2026, month = 3, day = 12}
    }
  }
  
  local vuln_report = vulns.Report:new(VULNERABLE_ENDPOINT, host, port)
  
  -- Check if target is Weaver E-cology
  if not is_weaver_ecology(host, port) then
    vuln_table.state = vulns.STATE.NOT_VULN
    return vuln_report:make_output(vuln_table)
  end
  
  -- Check if vulnerable endpoint is accessible
  local is_vulnerable, status_code = check_vulnerability(host, port)
  
  if is_vulnerable then
    vuln_table.state = vulns.STATE.VULNERABLE
    vuln_table.extra_info = string.format(
      "Debug endpoint accessible at %s (HTTP %d)",
      VULNERABLE_ENDPOINT,
      status_code
    )
  else
    vuln_table.state = vulns.STATE.NOT_VULN
  end
  
  return vuln_report:make_output(vuln_table)
end

Usage Examples:

# Scan single host
nmap -p 80 --script CVE-2026-22679_Weaver_Ecology_RCE.nse target.com

# Scan multiple ports
nmap -p 80,443,8080,8443 --script CVE-2026-22679_Weaver_Ecology_RCE.nse target.com

# Scan network range
nmap -p 80 --script CVE-2026-22679_Weaver_Ecology_RCE.nse 10.0.0.0/24

# Verbose output
nmap -p 80 --script CVE-2026-22679_Weaver_Ecology_RCE.nse -v target.com

# Combine with other scripts
nmap -p 80 --script http-title,http-headers,CVE-2026-22679_Weaver_Ecology_RCE.nse target.com

Example Output:

PORT   STATE SERVICE
80/tcp open  http
| CVE-2026-22679_Weaver_Ecology_RCE:
|   VULNERABLE:
|   Weaver E-cology Unauthenticated RCE (CVE-2026-22679)
|     State: VULNERABLE
|     Risk level: CRITICAL
|     Debug endpoint: accessible at /papi/esearch/data/devops/dubboApi/debug/method
|     Description:
|       The dubboApi debug endpoint is exposed without authentication.
|       An attacker can send POST requests with crafted parameters to
|       achieve remote code execution. Update to build 20260312.
|     Discovery Date: 2026-03-12
|     Disclosure Date: 2026-03-31
|     IDs:
|       CVE: CVE-2026-22679
|       CWE: CWE-94 (Code Injection)
|     References:
|_      https://nvd.nist.gov/vuln/detail/CVE-2026-22679

Indicators of Compromise

Network Indicators

HTTP POST requests to /papi/esearch/data/devops/dubboApi/debug/method
Requests containing interfaceName or methodName parameters
Multiple rapid requests to the debug endpoint from same source IP
Requests originating from external/unexpected source IPs
POST requests with JSON payloads targeting RPC interfaces
Unusual HTTP 200 or 405 responses from the debug endpoint path

Log Indicators

Web Server Access Logs:

POST /papi/esearch/data/devops/dubboApi/debug/method HTTP/1.1 200 -
POST /papi/esearch/data/devops/dubboApi/debug/method HTTP/1.1 405 -
GET /papi/esearch/data/devops/dubboApi/debug/method HTTP/1.1 405 -

Application Logs:

Exceptions or errors related to Dubbo RPC invocation
Unvalidated parameter warnings in RPC framework logs
ClassNotFoundException or method invocation failures
Unexpected interface resolution attempts

Host-Based Indicators

Unexpected child processes spawned from Weaver Java process
New user accounts created on system
Unexpected network connections from Weaver service
Modification of Weaver configuration files
Presence of webshells in Weaver directories
Unusual file writes to system directories
Suspicious cronjob or service entries

File System Indicators

Unexpected files in /tmp/ or /var/tmp/
Modified Weaver JAR files or configuration files
New shell scripts in web-accessible directories
Presence of common webshell filenames (shell.jsp, cmd.jsp, etc.)

Remediation

Immediate Actions (0-24 hours)

Disable Network Access to Debug Endpoint

Add firewall rule to block access to vulnerable endpoint:

# iptables example
iptables -I INPUT -p tcp --dport 80 -m string --string "/papi/esearch/data/devops/dubboApi" --algo bm -j DROP

# nginx example
location /papi/esearch/data/devops/dubboApi {
    return 403;
}

# Apache example
<Location "/papi/esearch/data/devops/dubboApi">
    Deny from all
</Location>

Monitor for Active Exploitation
- Review web server access logs for POST requests to vulnerable endpoint
- Check for suspicious Dubbo RPC invocations
- Monitor system processes for unexpected child processes
- Set up alerts for endpoint access
Restrict Network Access
- Limit access to Weaver E-cology instances to internal networks only
- Disable internet-facing exposure if possible
- Implement network segmentation
- Use VPN/bastion hosts for remote access

Short-term Actions (1-7 days)

Apply Official Patch

Update to Weaver E-cology build 20260312 or later:

# Contact Weaver support or download from official repository
# Backup current installation
cp -r /opt/ecology /opt/ecology.backup.20260415

# Apply patch
/opt/ecology/bin/upgrade.sh --version 20260312

# Verify patch application
curl -X POST http://localhost/papi/esearch/data/devops/dubboApi/debug/method
# Should return 404 after patch

Review Access Logs
- Analyze all web server logs since deployment
- Look for patterns matching indicators of compromise
- Check for successful RCE execution patterns
- Determine scope of potential compromise
Conduct Host Forensics
- Check for unexpected user accounts
- Scan for webshells or backdoors
- Review recent file modifications
- Check system logs for suspicious activity

Long-term Actions (1-4 weeks)

Full System Assessment
- Determine if system was exploited before patching
- Review all RCE attempts and system modifications
- Assess damage to business data and systems
- Initiate incident response if compromise confirmed
Implement Network Segmentation
- Deploy Weaver instances in isolated network segment
- Implement strict inbound/outbound filtering
- Use Web Application Firewall (WAF)
- Require VPN for administrative access
Hardening
- Disable unnecessary debug endpoints
- Implement request signing/validation
- Deploy runtime application self-protection (RASP)
- Regular security audits and penetration testing
Update Security Monitoring
- Implement endpoint detection and response (EDR)
- Deploy SIEM for centralized log analysis
- Create alerts for RPC endpoint access patterns
- Monitor for similar vulnerabilities in other applications

References

Author

Kerem Oruc (@keraattin)

GitHub: https://github.com/keraattin
Twitter: https://twitter.com/keraattin

Disclaimer: This information is provided for educational and defensive security purposes only. Unauthorized access to computer systems is illegal. Always obtain proper authorization before testing or accessing systems you do not own.

Last Updated: 2026-04-15

CVE ID	CVE-2026-22679
CVSS Score	9.3 (Critical)
CVSS Vector	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE	CWE-94 (Code Injection)
Vendor	Weaver (Fanwei)
Product	E-cology 10.0
Vulnerability Type	Unauthenticated Remote Code Execution (RCE)
Affected Endpoint	`/papi/esearch/data/devops/dubboApi/debug/method`
Attack Vector	Network / HTTP POST
Authentication Required	None
Versions Affected	10.0 versions prior to build 20260312
Fixed Version	Build 20260312 (released 2026-03-12)
Active Exploitation	Since 2026-03-31 (Shadowserver Foundation)
Patch Method	Complete removal of vulnerable endpoint

`interfaceName`	String	RPC interface class name (attacker-controlled)	`com.weaver.rpc.InvokeCommand`
`methodName`	String	Method name to invoke (attacker-controlled)	`executeCommand`
`parameters`	Array	Method parameters passed directly to execution logic	`["id"]`

Confidentiality	CRITICAL	Unauthenticated access to all system data, documents, user credentials, database contents
Integrity	CRITICAL	Ability to modify files, documents, database records, and system configurations
Availability	CRITICAL	System shutdown, resource exhaustion, destruction of data, service disruption
Scope	CHANGED	Weaver service user typically runs as root or high-privilege account; full system compromise

10.0	< 20260312	VULNERABLE	Yes
10.0	>= 20260312	PATCHED	N/A (endpoint removed)
9.x and earlier	All	UNKNOWN	Check with vendor

CVE-2026-22679

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