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.

CVSS v3 5.5 MEDIUM

5.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/panda3d/panda3d	Product
https://seclists.org/fulldisclosure/2026/Jan/9	Exploit Mailing List Third Party Advisory
https://www.panda3d.org/	Product
https://www.vulncheck.com/advisories/panda3d-deploy-stub-stack-exhaustion-via-unbounded-alloca	Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:cmu:panda3d:*:*:*:*:*:*:*:*

History

12 Jan 2026, 18:00

Type	Values Removed	Values Added
CWE		CWE-908
References	~~() https://github.com/panda3d/panda3d -~~	() https://github.com/panda3d/panda3d - Product
References	~~() https://seclists.org/fulldisclosure/2026/Jan/9 -~~	() https://seclists.org/fulldisclosure/2026/Jan/9 - Exploit, Mailing List, Third Party Advisory
References	~~() https://www.panda3d.org/ -~~	() https://www.panda3d.org/ - Product
References	~~() https://www.vulncheck.com/advisories/panda3d-deploy-stub-stack-exhaustion-via-unbounded-alloca -~~	() https://www.vulncheck.com/advisories/panda3d-deploy-stub-stack-exhaustion-via-unbounded-alloca - Third Party Advisory
CPE		cpe:2.3:a:cmu:panda3d::::::::
First Time		Cmu Cmu panda3d
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 5.5

07 Jan 2026, 21:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-01-07 21:16

Updated : 2026-01-12 18:00

NVD link : CVE-2026-22188

Mitre link : CVE-2026-22188

CVE.ORG link : CVE-2026-22188

JSON object : View

Products Affected

cmu

panda3d

CWE

CWE-457

Use of Uninitialized Variable

CWE-789

Memory Allocation with Excessive Size Value

CWE-908

Use of Uninitialized Resource

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