CVE-2025-43930
📋 TL;DR
Hashview 0.8.1 contains a critical authentication bypass vulnerability in its password reset functionality. Attackers can take over any user account by manipulating the Host HTTP header during password reset requests. All Hashview 0.8.1 installations with default configuration are affected.
💻 Affected Systems
- Hashview
⚠️ Manual Verification Required
This CVE does not have specific version information in our database, so automatic vulnerability detection cannot determine if your system is affected.
Why? The CVE database entry doesn't specify which versions are vulnerable (no version ranges provided by the vendor/NVD).
🔒 Custom verification scripts are available for registered users. Sign up free to download automated test scripts.
- Review the CVE details at NVD
- Check vendor security advisories for your specific version
- Test if the vulnerability is exploitable in your environment
- Consider updating to the latest version as a precaution
⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of all user accounts, including administrative accounts, leading to full system takeover and potential data exfiltration.
Likely Case
Account takeover of standard users, enabling unauthorized access to sensitive hash data and system resources.
If Mitigated
Limited impact if proper network segmentation and access controls prevent external attackers from reaching the vulnerable endpoint.
🎯 Exploit Status
Exploitation requires only HTTP request manipulation and no authentication.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Not available
Vendor Advisory: https://github.com/hashview/hashview/issues/145
Restart Required: No
Instructions:
No official patch available. Apply workarounds or upgrade to a future patched version when released.
🔧 Temporary Workarounds
Configure SERVER_NAME
linuxExplicitly set SERVER_NAME environment variable to prevent Host header dependency
export SERVER_NAME=yourdomain.com
Web Server Configuration
allConfigure reverse proxy or web server to validate and sanitize Host headers
🧯 If You Can't Patch
- Disable password reset functionality entirely
- Implement network-level controls to restrict access to password reset endpoints
🔍 How to Verify
Check if Vulnerable:
Check if SERVER_NAME environment variable is not set in Hashview configurationCheck Version:
Check Hashview version in web interface or configuration filesVerify Fix Applied:
Verify SERVER_NAME is properly configured and test password reset with manipulated Host headers📡 Detection & Monitoring
Log Indicators:
- Multiple failed password reset attempts from same IP
- Password reset requests with unusual Host headers
Network Indicators:
- HTTP requests to /users/reset_password with manipulated Host headers
SIEM Query:
source="hashview" AND (uri_path="/users/reset_password" OR event="password_reset")