EUVD-2026-31127
Improperly Controlled Modification of Object Prototype Attributes (Prototype Pollution) (CWE-1321)
GHSA-hwpv-w8h7-v7qm
5.3
CVSS 4.0
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CVSS VectorNVD
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:N/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
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
P
Scope
X
Lifecycle Timeline
2
Analysis Generated
May 20, 2026 - 17:32 vuln.today
CVSS changed
May 20, 2026 - 17:22 NVD
4.3 (MEDIUM)
5.3 (MEDIUM)
DescriptionNVD
Prototype pollution in csv parsing logic during import can lead to untrusted file paths (but not arguments) entering shell.openExternal after specific user behavior leading to "1-click" command execution.
AnalysisAI
Prototype pollution in MongoDB Compass's CSV import parsing logic creates a '1-click' command execution path across versions 1.36.x through 1.49.5. A crafted CSV file can pollute JavaScript object prototypes during the import workflow, causing untrusted file paths to reach Electron's shell.openExternal() API and be executed by the operating system's default handler. …
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External POC / Exploit Code
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