Vulnerability · Published Jan 7, 2026 · Assigned by VulnCheck

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

Medium 6.9

In plain English

A medium-severity security flaw in Panda3D from Panda3D. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 11% of all known vulnerabilities).

Severity (CVSS 4.0)6.9Medium

Exploit odds (30 days)0.2%top 89.0% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

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.

Affected products (as reported)

Vendor	Product	Versions
Panda3D	Panda3D	0 – through 1.10.16

Weakness: CWE-457, CWE-789 · 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

References

https://seclists.org/fulldisclosure/2026/Jan/9 technical-description, exploit
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