CVE-2026-48122 Workspace settings can override executable and Gemfile paths used by the Ruby LSP VS Code extension
A malicious repository can override executable paths in the Ruby LSP VS Code extension, leading to code execution when the developer opens and trusts the repository.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-48122?
CVE-2026-48122 is a medium-severity command injection vulnerability in Shopify ruby-lsp, published on 7 Aug 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
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.
Weakness: CWE-78
Which versions are affected by CVE-2026-48122?
How do I fix CVE-2026-48122?
No fix has been published for CVE-2026-48122 yet. Limit exposure of the affected software until one is available.
Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.
Is CVE-2026-48122 being exploited?
There is no known exploitation of CVE-2026-48122 in the wild and no public exploit code.
Sources
Also known as GHSA-2x7g-8mp4-572w, UBUNTU-CVE-2026-48122.