CVE-2026-22188 Panda3D <= 1.10.16 Deploy-Stub Stack Exhaustion via Unbounded alloca()
Attackers can crash the Panda3D deploy-stub by supplying excessive command-line arguments, causing stack exhaustion and undefined behavior.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-22188?
CVE-2026-22188 is a medium-severity denial of service vulnerability in Panda3D, published on 7 Jan 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
The deploy-stub component in Panda3D versions up to and including 1.10.16 contains a denial of service vulnerability due to unbounded stack allocation. The deploy-stub executable allocates argv_copy and argv_copy2 using alloca() based directly on the attacker-controlled argc value without validation. Supplying a large number of command-line arguments can exhaust stack space and propagate uninitialized stack memory into Python interpreter initialization, resulting in a reliable crash and undefined behavior.
Which versions are affected by CVE-2026-22188?
It affects 1 product.
Products include Cmu Panda3d.
How do I fix CVE-2026-22188?
No fix has been published for CVE-2026-22188 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2026-22188 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-22188 exists.
Other vulnerabilities in Panda3D
Sources
Also known as GHSA-xvxx-4fr3-55xv.