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Python CVE-2026-22188

MEDIUM
Use of Uninitialized Variable (CWE-457)
2026-01-07 disclosure@vulncheck.com
6.9
CVSS 4.0 · NVD
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Severity by source

NVD PRIMARY
6.9 MEDIUM
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
X

Lifecycle Timeline

4
CVSS changed
May 26, 2026 - 14:22 NVD
5.5 (MEDIUM) 6.9 (MEDIUM)
Analysis Generated
Mar 12, 2026 - 21:54 vuln.today
PoC Detected
Jan 12, 2026 - 18:00 vuln.today
Public exploit code
CVE Published
Jan 07, 2026 - 21:16 nvd
MEDIUM 5.5

DescriptionCVE.org

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.

AnalysisAI

Panda3D's deploy-stub executable up to version 1.10.16 is vulnerable to denial of service through unvalidated stack allocation based on command-line argument counts, allowing local attackers to crash the application by supplying excessive arguments. Public exploit code exists for this vulnerability, and no patch is currently available. …

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Vulnerability AssessmentAI

Risk Assessment CVSS 5.5 (MEDIUM). … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario An attacker could exploit this flaw, a reliable crash and undefined behavior.
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Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. …

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CVE-2026-22188 vulnerability details – vuln.today

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