CVE-2026-22188: Cmu PANDA3D

Medium severity, CVSS 5.5. EPSS: 0.2% chance of exploitation in the next 30 days.

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.

Affected products

• Cmu PANDA3D: up to and including 1.10.16

Published 2026-01-07. Last modified 2026-07-14.