CVE-2026-34060 (GCVE-0-2026-34060)
Vulnerability from cvelistv5 – Published: 2026-03-31 01:59 – Updated: 2026-04-02 14:51
VLAI
EPSS
VEX
Title
Ruby LSP has arbitrary code execution through branch setting
Summary
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.
Severity
9.8 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-04-02 14:51 UTC
CWE
- CWE-94 - Improper Control of Generation of Code ('Code Injection')
Assigner
GitHub_M
CNA
References
2 references
| URL | Tags |
|---|---|
| https://github.com/Shopify/ruby-lsp/security/advi… | x_refsource_CONFIRM |
| https://github.com/Shopify/ruby-lsp/releases/tag/… | x_refsource_MISC |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Shopify | ruby-lsp |
Affected:
< 0.26.9
|
|
| Shopify | Shopify.ruby-lsp |
Affected:
< 0.10.2
|
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}
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