Medium 6.9Published Jan 7, 2026

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

Updated under an hour ago (Oct 27, 2026, 7:23 AM ET)

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No exploitation reported and no EPSS estimate yet.

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Exploited in the last 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.

CVSS: 6.9 MEDIUM (v4.0, CNA)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
Weakness (CWE): CWE-457, CWE-789
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: VulnCheck
NVD analysis: Modified
Record last updated: Jul 14, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Panda3D Panda3D panda3d:panda3d (from the name)	through 1.10.16	CNA record
cmu panda3d cmu:panda3d	through 1.10.16	NVD

References

References

https://seclists.org/fulldisclosure/2026/Jan/9	technical-description, exploit, mailing-list, third-party-advisory
https://www.panda3d.org/	product
https://github.com/panda3d/panda3d	product
https://www.vulncheck.com/advisories/panda3d-deploy-stub-stack-exhaustion-via-unbounded-alloca	third-party-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.