CVE-2026-22188

MEDIUM

5.5

Description

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.

CVE Details

CVSS v3.1 Score5.5

SeverityMEDIUM

CVSS VectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Attack VectorLOCAL

ComplexityLOW

Privileges RequiredLOW

User InteractionNONE

Published1/7/2026

Last Modified1/12/2026

Sourcenvd

Honeypot Sightings0

Affected Products

cmu:panda3d

Weaknesses (CWE)

CWE-457CWE-789CWE-908

References

https://github.com/panda3d/panda3d(disclosure@vulncheck.com)

https://seclists.org/fulldisclosure/2026/Jan/9(disclosure@vulncheck.com)

https://www.panda3d.org/(disclosure@vulncheck.com)

https://www.vulncheck.com/advisories/panda3d-deploy-stub-stack-exhaustion-via-unbounded-alloca(disclosure@vulncheck.com)

IOC Correlations

No correlations recorded

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