CVE-2022-50910: Beehive Forum Auth Bypass Vulnerability

CVE-2022-50910 Overview

CVE-2022-50910 is a host header injection vulnerability discovered in Beehive Forum version 1.5.2. The vulnerability exists within the forgot password functionality, allowing attackers to manipulate password reset requests by injecting a malicious host header. This flaw enables threat actors to intercept password reset tokens and subsequently change victim account passwords without requiring direct authentication, effectively enabling account takeover attacks.

Critical Impact

Attackers can exploit this host header injection vulnerability to intercept password reset tokens and take over user accounts without authentication, potentially compromising all user accounts on affected Beehive Forum installations.

Affected Products

• Beehive Forum 1.5.2

Discovery Timeline

• 2026-01-13 - CVE-2022-50910 published to NVD
• 2026-01-13 - Last updated in NVD database

Technical Details for CVE-2022-50910

Vulnerability Analysis

This vulnerability is classified under CWE-640 (Weak Password Recovery Mechanism for Forgotten Password). The forgot password functionality in Beehive Forum 1.5.2 improperly trusts the HTTP Host header when generating password reset links. When a user requests a password reset, the application constructs the reset URL using the Host header value from the incoming HTTP request without proper validation.

An attacker can exploit this by submitting a password reset request for a target user while simultaneously injecting a malicious Host header pointing to an attacker-controlled domain. The application will then generate a password reset email containing a link that directs to the attacker's server instead of the legitimate forum domain. When the victim clicks the reset link, the password reset token is transmitted to the attacker's server, allowing them to use the captured token to reset the victim's password.

Root Cause

The root cause of this vulnerability is the application's failure to validate and sanitize the HTTP Host header before using it to construct password reset URLs. The forgot password mechanism directly incorporates the untrusted Host header value into the reset link generation logic, trusting user-supplied input without verification against a whitelist of legitimate hostnames. This design flaw violates the security principle of never trusting user input, especially for security-critical operations like password recovery.

Attack Vector

The attack is network-based and requires minimal complexity to execute. An attacker initiates the attack by:

1. Identifying a target user's email address associated with a Beehive Forum account
2. Sending a password reset request to the vulnerable forum while injecting a malicious Host header (e.g., Host: attacker-controlled-domain.com)
3. The forum generates a password reset email with a link pointing to the attacker's domain
4. When the victim clicks the link, thinking it's legitimate, their browser sends the reset token to the attacker's server
5. The attacker captures the token and uses it on the legitimate forum to reset the victim's password

This attack requires user interaction (the victim must click the malicious link), but the social engineering component is minimal since the email originates from the legitimate forum. Additional technical details and proof-of-concept information can be found in the Exploit-DB #50923 entry and the VulnCheck Beehive Advisory.

Detection Methods for CVE-2022-50910

Indicators of Compromise

• Unusual password reset requests with non-standard or external Host header values in web server access logs
• Multiple password reset requests for the same account from different IP addresses in short succession
• Password reset emails with URLs pointing to domains other than the legitimate forum domain
• User reports of receiving password reset emails they did not request

Detection Strategies

• Implement web application firewall (WAF) rules to detect and block requests with Host headers that don't match the expected domain
• Monitor HTTP request logs for discrepancies between the Host header and the actual server hostname
• Configure intrusion detection systems to alert on patterns of password reset requests with suspicious Host headers
• Review email gateway logs for password reset emails containing URLs with unexpected domains

Monitoring Recommendations

• Enable detailed logging of HTTP headers for all password reset requests
• Set up alerting for password reset requests where the Host header value differs from the configured server hostname
• Monitor for spikes in password reset request volume that could indicate exploitation attempts
• Implement user behavior analytics to detect account access patterns following password resets

How to Mitigate CVE-2022-50910

Immediate Actions Required

• Upgrade Beehive Forum to a patched version if available from the official Beehive Forum website
• Configure the web server to validate and restrict Host header values to the expected domain
• Implement a reverse proxy or WAF to filter requests with malicious Host headers
• Review user accounts for signs of unauthorized password changes

Patch Information

No official vendor patch information is currently available in the CVE data. Administrators should monitor the Beehive Forum SourceForge project page and official website for security updates. Until a patch is released, implementing the workarounds below is strongly recommended.

Workarounds

• Configure the application or web server to use a hardcoded, trusted domain for generating password reset URLs instead of the Host header
• Implement Host header validation at the web server level (Apache, Nginx) to reject requests with unexpected Host values
• Deploy a reverse proxy that rewrites the Host header to the expected value before forwarding to the application
• Consider temporarily disabling the forgot password functionality if the risk is deemed unacceptable

# Nginx configuration example to validate Host header
server {
    listen 80;
    server_name forum.yourdomain.com;
    
    # Reject requests with unexpected Host headers
    if ($host !~ ^(forum\.yourdomain\.com)$) {
        return 444;
    }
    
    # Continue with normal configuration
    location / {
        proxy_pass http://beehive_backend;
        proxy_set_header Host forum.yourdomain.com;
    }
}