CVE-2026-119025 PUBLISHED

open 7.2.0 before 11.0.0 OS Command Injection via PowerShell on Windows

Assigner: VulnCheck
Reserved: 29.10.2026 Published: 29.10.2026 Updated: 29.10.2026

open 7.2.0 before 11.0.0 contains an OS command injection vulnerability that allows attackers to execute PowerShell code by supplying crafted URLs on Windows and WSL. Attackers can embed $(...) subexpressions in URLs, such as OAuth authorization_endpoint values from malicious MCP servers, which execute when index.js passes them unescaped to powershell -EncodedCommand.

CVSS Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CVSS Score: 7.7

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Network	Confidentiality	High	Confidentiality	None
Attack Complexity	Low	Integrity	High	Integrity	None
Attack Requirements	Present	Availability	High	Availability	None
Privileges Required	None
User Interaction	Passive

CVSS 4.0

CVSS Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS Score: 7.5

Attack Vector	Network	Scope	Unchanged
Attack Complexity	High	Confidentiality Impact	High
Privileges Required	None	Integrity Impact	High
User Interaction	Required	Availability Impact	High

CVSS 3.1

Product Status

Vendor	sindresorhus
Product	open
Versions	Default: unaffected affected from 7.2.0 to 11.0.0 (excl.)

Vendor	modelcontextprotocol
Product	inspector
Versions	Default: unaffected affected from 2.0.0 to 2.12.0 (excl.)

Vendor	anomalyco
Product	opencode
Versions	Default: unaffected affected from 1.0.137 to 1.18.33 (excl.)

Credits

Eilon Cohen (Pillar Security) finder

References

Problem Types

Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') CWE