CVE-2025-71279 — AI Deep Analysis Summary

🚨 **Essence**: A critical **Authorization Flaw** in XenForo Passkeys. <br>💥 **Consequences**: Attackers can **bypass** Passkey authentication, leading to full account takeover.…

🛡️ **Root Cause**: **CWE-287** (Improper Authentication). <br>🔍 **Flaw**: The system fails to properly validate the security of Passkeys added to user accounts.…

📦 **Affected**: **XenForo** Forum Software. <br>📅 **Versions**: All versions **prior to 2.3.7**. <br>⚠️ **Component**: Specifically the **Passkey** integration module within the user account system.

💀 **Attacker Actions**: <br>1. **Bypass** Passkey login. <br>2. **Impersonate** legitimate users. <br>3. **Access** sensitive forum data. <br>4. **Modify** user profiles or posts. <br>5.…

📉 **Threshold**: **LOW**. <br>🔑 **Auth**: **None** required (PR:N). <br>🌐 **Network**: **Network** accessible (AV:N). <br>👤 **UI**: **No** user interaction needed (UI:N). <br>🎯 **AC**: **Low** complexity (AC:L).…

🚫 **Public Exploit**: **No** public PoC or wild exploitation detected in the provided data. <br>📄 **Status**: Only vendor advisories and third-party reports exist.…

🔍 **Self-Check**: <br>1. Check your XenForo version. <br>2. If **< 2.3.7**, you are vulnerable. <br>3. Scan for sites using **Passkey** login features. <br>4. Verify if the server is running the patched version.

✅ **Fixed**: **Yes**. <br>🛠️ **Patch**: **XenForo 2.3.7** includes the security fix. <br>🔗 **Source**: Official XenForo community release notes confirm the fix for Passkey security bypass.

🚧 **No Patch Workaround**: <br>1. **Disable** Passkey login entirely. <br>2. Force users to use **traditional passwords** only. <br>3. Restrict access if possible (though PR:N makes this hard). <br>4.…

🔥 **Urgency**: **CRITICAL**. <br>⏱️ **Priority**: **Immediate Action Required**. <br>📈 **Reason**: Remote, unauthenticated, high impact. Update to **2.3.7** immediately to prevent account takeovers.