CVE-2026-25047
📋 TL;DR
CVE-2026-25047 is a prototype pollution vulnerability in the deephas npm package version 1.0.7 that allows attackers to modify JavaScript object prototypes, potentially altering application behavior globally. This affects any Node.js application using the vulnerable deephas package version. The vulnerability enables attackers to inject malicious properties into objects that could lead to denial of service, data corruption, or remote code execution.
💻 Affected Systems
- deephas npm package
📦 What is this software?
Deephas by Sharpred
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution leading to complete system compromise, data theft, or service disruption.
Likely Case
Application instability, denial of service, or data manipulation through prototype pollution.
If Mitigated
Limited impact with proper input validation and sandboxing, potentially causing only minor application errors.
🎯 Exploit Status
The GitHub advisory includes technical details that could be used to create exploits. Prototype pollution vulnerabilities are well-understood and frequently weaponized.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 1.0.8
Vendor Advisory: https://github.com/sharpred/deepHas/security/advisories/GHSA-2733-6c58-pf27
Restart Required: Yes
Instructions:
1. Update package.json to specify deephas version 1.0.8 or higher. 2. Run 'npm update deephas' or 'npm install deephas@1.0.8'. 3. Restart the Node.js application to load the patched version.
🔧 Temporary Workarounds
Input validation and sanitization
allImplement strict input validation to prevent malicious object property injection.
Object.freeze on prototypes
allFreeze Object.prototype to prevent prototype pollution attacks.
Object.freeze(Object.prototype);
🧯 If You Can't Patch
- Implement strict input validation and sanitization for all user-controlled data passed to deephas functions.
- Use security monitoring to detect anomalous behavior and implement network segmentation to limit potential impact.
🔍 How to Verify
Check if Vulnerable:
Check package.json or run 'npm list deephas' to see if version 1.0.7 is installed.Check Version:
npm list deephas | grep deephasVerify Fix Applied:
Verify deephas version is 1.0.8 or higher using 'npm list deephas' and test application functionality.📡 Detection & Monitoring
Log Indicators:
- Unusual application crashes
- Unexpected property modifications in objects
- Errors related to prototype chain
Network Indicators:
- Unusual outbound connections from Node.js processes
- Anomalous payloads containing __proto__ or constructor properties
SIEM Query:
process.name:node AND (event.action:crash OR log.message:"*prototype*" OR log.message:"*__proto__*")