CVE-2026-22188 MEDIUM

CVE-2026-22188: Panda3D <= 1.10.16 Deploy-Stub Stack Exhaustion via Unbounded alloca()

Vendor Panda3D
Product Panda3D
Weakness CWE-457
Published January 7, 2026
Last update May 26, 2026

CVSS base score

6.9/10
Attack vector Local
Attack complexity Low
Privileges required None
User interaction None
Confidentiality
Integrity

CVSS vector

CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

January 7, 2026 CVE published
May 26, 2026 Record updated