High
Ruby LSP has arbitrary code execution through branch setting
Type: advisorySources: OSV
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.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2026-34060
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 3 Nov 2026, 17:44 UTC · Revision 1
Source evidence
Ruby LSP has arbitrary code execution through branch setting
core-osv · Original sourcePublished 31 Mar 2026, 01:59 UTC
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.
osv:CVE-2026-34060
Complete source record
{
"id": "ff8d1046158d2b1ff5865951ae0a29be1c22cc408864645679afb37346cd4a0a",
"url": "https://osv.dev/vulnerability/CVE-2026-34060",
"method": "structured",
"payload": {
"kind": "advisory",
"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.",
"evidence": "osv:CVE-2026-34060",
"products": [],
"severity": "high",
"structured": {
"id": "CVE-2026-34060",
"aliases": [
"CVE-2026-34060",
"GHSA-c4r5-fxqw-vh93"
],
"metrics": [
{
"type": "CVSS_V4",
"score": "CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/shopify/ruby-lsp",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"fixed": "9e53e7e8366a13e44079f252ee8e5d5000803fe2"
},
{
"fixed": "29ecc8d29dde87e6157a75bc2f0a3eb62db02ea3"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:shopify:ruby_lsp:*:*:*:*:*:visual_studio_code:*:*",
"range": [
{
"introduced": "0"
},
{
"fixed": "0.10.2"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:shopify:ruby_lsp:*:*:*:*:*:ruby:*:*",
"range": [
{
"introduced": "0"
},
{
"fixed": "0.26.9"
}
],
"source": "CPE_RANGE"
},
{
"range": [
{
"fixed": "29ecc8d29dde87e6157a75bc2f0a3eb62db02ea3"
}
],
"source": "REFERENCES_TAG",
"original_tag": "v0.26.9"
}
]
}
}
],
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"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-34060.json"
}
}
],
"modified": "2026-10-28T02:30:31.192736687Z",
"provider": "osv",
"references": [
"https://github.com/Shopify/ruby-lsp/releases/tag/v0.26.9",
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/34xxx/CVE-2026-34060.json",
"https://github.com/Shopify/ruby-lsp/security/advisories/GHSA-c4r5-fxqw-vh93",
"https://nvd.nist.gov/vuln/detail/CVE-2026-34060"
],
"provider_metadata": {
"cwe_ids": [
"CWE-94"
],
"cna_assigner": "GitHub_M",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/34xxx/CVE-2026-34060.json"
}
},
"related_cves": [
{
"value": "CVE-2026-34060",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 497973,
"published_at": "2026-03-31T01:59:51.17+00:00"
}