Summary
generated automatically from NVD dataThe "open" package, versions 7.2.0 up to but not including 11.0.0, has an OS command injection flaw (CWE-78) on Windows and WSL. Crafted URLs, such as an OAuth authorization_endpoint value supplied by a malicious MCP server, can embed $(...) subexpressions. index.js passes these unescaped to powershell -EncodedCommand, so attackers can run arbitrary PowerShell code. The CVSS v3.1 score is 7.5 (HIGH).
NVD description
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.
EPSS · FIRST.org
1.4%probability of exploitation in the next 30 days
Higher than 73% of scored CVEs
EPSS (Exploit Prediction Scoring System) estimates, from observed exploitation activity, how likely a CVE is to be exploited in the next 30 days. It complements CVSS, which measures severity, not likelihood. Score of 2026-10-30, recomputed daily by FIRST.org.
CVSS v3.1 Score
Information
- Published
- 29 oct. 2026
- Updated
- 29 oct. 2026
- Status
- Awaiting Analysis
- Source
- disclosure@vulncheck.com
Weaknesses (CWE)
References (8)
Similar CVEs
Other vulnerabilities of type CWE-78
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