CVE-2026-22188
📋 TL;DR
Panda3D versions up to 1.10.16 contain a denial of service vulnerability in the deploy-stub component. Attackers can crash the application by supplying a large number of command-line arguments, causing stack exhaustion and undefined behavior. This affects users who run Panda3D applications with deploy-stub enabled.
💻 Affected Systems
- Panda3D
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete application crash leading to denial of service, potential memory corruption, and undefined behavior that could theoretically enable further exploitation.
Likely Case
Reliable application crash (denial of service) when malicious command-line arguments are supplied.
If Mitigated
No impact if deploy-stub is not used or if input validation prevents excessive arguments.
🎯 Exploit Status
Exploitation requires ability to control command-line arguments passed to deploy-stub. The vulnerability is simple to trigger with basic scripting.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 1.10.17 or later
Vendor Advisory: https://www.panda3d.org/
Restart Required: Yes
Instructions:
1. Update Panda3D to version 1.10.17 or later. 2. Rebuild any applications using deploy-stub. 3. Restart affected services.
🔧 Temporary Workarounds
Disable deploy-stub
allRemove or disable the deploy-stub component if not required for your application.
Remove deploy-stub executable from your application distribution
Input validation wrapper
linuxCreate a wrapper script that validates command-line argument count before passing to deploy-stub.
#!/bin/bash
if [ $# -gt 100 ]; then
echo "Too many arguments"
exit 1
fi
./deploy-stub "$@"
🧯 If You Can't Patch
- Implement strict input validation to limit the number of command-line arguments accepted
- Isolate deploy-stub execution in containers or sandboxes to limit impact of crashes
🔍 How to Verify
Check if Vulnerable:
Check if Panda3D version is 1.10.16 or earlier and deploy-stub is present in the application.Check Version:
panda3d --version 2>&1 | grep -i versionVerify Fix Applied:
Verify Panda3D version is 1.10.17 or later, or test with excessive command-line arguments to confirm no crash occurs.📡 Detection & Monitoring
Log Indicators:
- Application crashes with stack overflow errors
- Unexpected termination of deploy-stub processes
Network Indicators:
- N/A - Local exploitation only
SIEM Query:
Process termination: process_name="deploy-stub" AND exit_code!=0