CVE-2026-34060
Critical · 9.8CVSS
9.8
EPSS
0.6%
Published
Mar 31, 2026
CISA due date
—
The record
Ruby LSP is an implementation of the language server protocol for Ruby. Prior to Shopify.ruby-lsp version 0.10.2 and ruby-lsp version 0.26.9, the rubyLsp.branch VS Code workspace setting was interpolated without sanitization into a generated Gemfile, allowing arbitrary Ruby code execution when a user opens a project containing a malicious .vscode/settings.json. This issue has been patched in Shopify.ruby-lsp version 0.10.2 and ruby-lsp version 0.26.9.
Affected packages
| Ecosystem | Package | Introduced | Fixed |
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