Vulnerability · Published Oct 29, 2026 · Assigned by VulnCheck
CVE-2026-119025open 7.2.0 before 11.0.0 OS Command Injection via PowerShell on Windows
High 7.5
In plain English
A high-severity OS command injection in opencode from anomalyco. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.4% (higher than 73% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code.
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu:24.04:LTS | node-open | no fix listed | UBUNTU-CVE-2026-119025 |
| Ubuntu:26.04:LTS | node-open | no fix listed | UBUNTU-CVE-2026-119025 |
| Ubuntu:26.10 | node-open | no fix listed | UBUNTU-CVE-2026-119025 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| sindresorhus | open | 7.2.0 – before 11.0.0 |
| modelcontextprotocol | inspector | 2.0.0 – before 2.12.0 |
| anomalyco | opencode | 1.0.137 – before 1.18.33 |
Weakness: CWE-78 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
References
- Patch Commit patch
- open v11.0.0 Release Notes release-notes
- https://github.com/sindresorhus/open/blob/v10.2.0/index.js#L189-L203 technical-description
- https://github.com/sindresorhus/open/blob/v7.2.0/index.js#L60-L99 technical-description
- GitHub Security Advisory (GHSA-q978-78c7-phqw) vendor-advisory
- opencode Pull Request #51414 patch, issue-tracking
- opencode Patch Commit patch
- VulnCheck Advisory: open 7.2.0 before 11.0.0 OS Command Injection via PowerShell on Windows third-party-advisory