Shopify ruby-lsp up to 0.10.3 VS Code Extension .vscode/settings.json os command injection

Summaryinfo

A vulnerability was found in Shopify ruby-lsp up to 0.10.3. It has been classified as critical. Affected is an unknown function of the file .vscode/settings.json of the component VS Code Extension. This manipulation causes os command injection. This vulnerability appears as CVE-2026-48122. The attack may be initiated remotely. There is no available exploit.

Detailsinfo

A vulnerability was found in Shopify ruby-lsp up to 0.10.3. It has been declared as critical. Affected by this vulnerability is an unknown code block of the file .vscode/settings.json of the component VS Code Extension. The manipulation with an unknown input leads to a os command injection vulnerability. The CWE definition for the vulnerability is CWE-78. The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

Ruby LSP is an implementation of the language server protocol for Ruby. Several workspace-level settings in the Ruby LSP VS Code extension prior to version 0.10.4 could override the path to the Ruby executable, the version manager executables, or the Bundler `Gemfile` used at startup. A malicious repository containing a `.vscode/settings.json` could set these values to attacker-controlled targets. Opening and trusting the repository would then execute code with the privileges of the developer. The Ruby LSP gem and clients of the language server in other editors are not affected. Version 0.10.4 of the Ruby LSP VS Code extension fixes the issue.

The advisory is shared at github.com. This vulnerability is known as CVE-2026-48122 since 05/20/2026. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. It demands that the victim is doing some kind of user interaction. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1202 for this issue.

By approaching the search of inurl:.vscode/settings.json it is possible to find vulnerable targets with Google Hacking.

Upgrading to version 0.10.4 eliminates this vulnerability.

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

• Programming Language Software

Vendor

• Shopify

Name

• ruby-lsp

Version

• 0.10.0
• 0.10.1
• 0.10.2
• 0.10.3

Website

• Product: https://github.com/Shopify/ruby-lsp/

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If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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