CVE-2026-22188

Panda3D versions up to and including 1.10.16 deploy-stub 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.

• https://github.com/panda3d/panda3d
  Product
• https://seclists.org/fulldisclosure/2026/Jan/9
  ExploitMailing ListThird Party Advisory
• https://www.panda3d.org/
  Product
• https://www.vulncheck.com/advisories/panda3d-deploy-stub-stack-exhaustion-via-unbounded-alloca
  Third Party Advisory