{ "document": { "category": "csaf_base", "csaf_version": "2.0", "distribution": { "tlp": { "label": "WHITE" } }, "lang": "en", "notes": [ { "category": "legal_disclaimer", "text": "The Netherlands Cyber Security Center (henceforth: NCSC-NL) maintains this portal to enhance access to its information and vulnerabilities. The use of this information is subject to the following terms and conditions:\n\nThe vulnerabilities disclosed in this portal are gathered by NCSC-NL from a variety of open sources, which the user can retrieve from other platforms. NCSC-NL makes every reasonable effort to ensure that the content of this portal is kept up to date, and that it is accurate and complete. Nevertheless, NCSC-NL cannot entirely rule out the possibility of errors, and therefore cannot give any warranty in respect of its completeness, accuracy or real-time keeping up-to-date. NCSC-NL does not control nor guarantee the accuracy, relevance, timeliness or completeness of information obtained from these external sources. The vulnerabilities disclosed in this portal are intended solely for the convenience of professional parties to take appropriate measures to manage the risks posed to the cybersecurity. No rights can be derived from the information provided therein.\n\nNCSC-NL and the Kingdom of the Netherlands assume no legal liability or responsibility for any damage resulting from either the use or inability of use of the vulnerabilities disclosed in this portal. This includes damage resulting from the inaccuracy of incompleteness of the information contained in it.\nThe information on this page is subject to Dutch law. All disputes related to or arising from the use of this portal regarding the disclosure of vulnerabilities will be submitted to the competent court in The Hague. This choice of means also applies to the court in summary proceedings." } ], "publisher": { "category": "coordinator", "contact_details": "cert@ncsc.nl", "name": "National Cyber Security Centre", "namespace": "https://www.ncsc.nl/" }, "title": "CVE-2026-34060", "tracking": { "current_release_date": "2026-04-02T15:49:03.933138Z", "generator": { "date": "2026-02-17T15:00:00Z", "engine": { "name": "V.E.L.M.A", "version": "1.7" } }, "id": "CVE-2026-34060", "initial_release_date": "2026-03-27T21:35:09.942108Z", "revision_history": [ { "date": "2026-03-27T21:35:09.942108Z", "number": "1", "summary": "CVE created.| Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| References created (3).| CWES updated (1)." }, { "date": "2026-03-27T21:35:19.286804Z", "number": "2", "summary": "NCSC Score created." }, { "date": "2026-03-30T22:12:54.812804Z", "number": "3", "summary": "References created (1)." }, { "date": "2026-03-31T02:38:49.572402Z", "number": "4", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| Products created (2).| References created (2).| CWES updated (1)." }, { "date": "2026-03-31T02:38:51.540002Z", "number": "5", "summary": "NCSC Score updated." }, { "date": "2026-03-31T03:25:10.525898Z", "number": "6", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| References created (2).| CWES updated (1)." }, { "date": "2026-03-31T03:25:13.416155Z", "number": "7", "summary": "NCSC Score updated." }, { "date": "2026-03-31T07:35:23.827158Z", "number": "8", "summary": "NCSC Score updated." }, { "date": "2026-03-31T16:55:41.423000Z", "number": "9", "summary": "Source connected.| CVE status created. (valid)| EPSS created." }, { "date": "2026-03-31T16:55:43.727442Z", "number": "10", "summary": "NCSC Score updated." }, { "date": "2026-03-31T19:55:15.816478Z", "number": "11", "summary": "References created (1)." }, { "date": "2026-04-01T00:44:33.022764Z", "number": "12", "summary": "Source created.| CVE status created. (valid)| Description created for source." }, { "date": "2026-04-02T15:27:40.961479Z", "number": "13", "summary": "CVSS created." }, { "date": "2026-04-02T15:27:43.890101Z", "number": "14", "summary": "NCSC Score updated." }, { "date": "2026-04-02T15:40:12.823512Z", "number": "15", "summary": "CVSS created.| Unknown change." } ], "status": "interim", "version": "15" } }, "product_tree": { "branches": [ { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:unknown/<0.10.2", "product": { "name": "vers:unknown/<0.10.2", "product_id": "CSAFPID-5966419" } } ], "category": "product_name", "name": "Shopify.ruby-lsp" }, { "branches": [ { "category": "product_version_range", "name": "vers:unknown/<0.26.9", "product": { "name": "vers:unknown/<0.26.9", "product_id": "CSAFPID-5966418" } } ], "category": "product_name", "name": "ruby-lsp" } ], "category": "vendor", "name": "Shopify" } ] }, "vulnerabilities": [ { "cve": "CVE-2026-34060", "cwe": { "id": "CWE-94", "name": "Improper Control of Generation of Code ('Code Injection')" }, "notes": [ { "category": "description", "text": "**Summary**\n\nThe `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`.\n\nOther editors that support workspace setting that get automatically applied upon opening the editor and trusting the workspace are also impacted since the server is the component that performs the interpolation.\n\n**Details**\n\nThe `branch` CLI argument passed to the `ruby-lsp` server was interpolated in the generated `.ruby-lsp/Gemfile` without sanitization. Editors that allow defining settings saved at the workspace level (e.g.: `.vscode/settings.json`) that gets automatically applied open the possibility to craft a malicious repository that once opened and trusted in the editor would run arbitrary code.\n\n**Impact**\n\nCode execution with the privileges of the user who opens the malicious project. Ruby LSP assumes workspace code is trusted and so opening the editor on an untrusted workspace can lead to executing potentially dangerous code.\n\n**Remediation**\n\nThe `rubyLsp.branch` setting has been removed entirely. VS Code extensions auto-update by default, so most users will receive the fix without action. Users who have disabled auto-updates should update to extension version >= 0.10.2.\n\nThe `branch` CLI flag was also entirely removed from the `ruby-lsp` gem. For users that don't add `ruby-lsp` to their Gemfiles, the server should auto-update. Users with the `ruby-lsp` in the Gemfile and locked to a specific version should update to >= 0.26.9.", "title": "github - https://api.github.com/advisories/GHSA-c4r5-fxqw-vh93" }, { "category": "description", "text": "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.", "title": "cveprojectv5 - https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/34xxx/CVE-2026-34060.json" }, { "category": "description", "text": "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.", "title": "nvd - https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-34060" }, { "category": "description", "text": "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.", "title": "debian - https://security-tracker.debian.org/tracker/CVE-2026-34060" }, { "category": "other", "text": "0.00026", "title": "EPSS" }, { "category": "other", "text": "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", "title": "CVSSV4" }, { "category": "other", "text": "7.1", "title": "CVSSV4 base score" }, { "category": "other", "text": "4.1", "title": "NCSC Score" } ], "product_status": { "known_affected": [ "CSAFPID-5966418", "CSAFPID-5966419" ] }, "references": [ { "category": "external", "summary": "Source - github", "url": "https://api.github.com/advisories/GHSA-c4r5-fxqw-vh93" }, { "category": "external", "summary": "Source - cveprojectv5", "url": "https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/34xxx/CVE-2026-34060.json" }, { "category": "external", "summary": "Source - nvd", "url": "https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-34060" }, { "category": "external", "summary": "Source - first", "url": "https://api.first.org/data/v1/epss?limit=10000&offset=0" }, { "category": "external", "summary": "Source - debian", "url": "https://security-tracker.debian.org/tracker/CVE-2026-34060" }, { "category": "external", "summary": "Reference - cveprojectv5; github; nvd", "url": "https://github.com/Shopify/ruby-lsp/security/advisories/GHSA-c4r5-fxqw-vh93" }, { "category": "external", "summary": "Reference - cveprojectv5; github; nvd", "url": "https://github.com/Shopify/ruby-lsp/releases/tag/v0.26.9" }, { "category": "external", "summary": "Reference - github", "url": "https://github.com/advisories/GHSA-c4r5-fxqw-vh93" }, { "category": "external", "summary": "Reference - github", "url": "https://github.com/rubysec/ruby-advisory-db/blob/master/gems/ruby-lsp/CVE-2026-34060.yml" }, { "category": "external", "summary": "Reference - github", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-34060" } ], "scores": [ { "cvss_v3": { "version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "baseScore": 9.8, "baseSeverity": "CRITICAL" }, "products": [ "CSAFPID-5966418", "CSAFPID-5966419" ] } ], "title": "CVE-2026-34060" } ] }