How severe is CVE-2026-34060?

CVE-2026-34060 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-34060 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (38th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-34060?

CVE-2026-34060 primarily affects Shopify Ruby Lsp. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2026-34060?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2026-34060 have an EU (EUVD) identifier?

Yes. CVE-2026-34060 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-17282.

When was CVE-2026-34060 published?

CVE-2026-34060 was published on 2026-03-31 and last updated on 2026-06-17.

CVE-2026-34060

CVE-2026-34060 is a critical-severity vulnerability in Shopify Ruby Lsp with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-94.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v4: 7.1
EPSS exploit prediction: 0% (38th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-17282
Weakness: CWE-94
Affected product: Shopify Ruby Lsp
Published: 2026-03-31
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is CVE-2026-34060?: 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.
How severe is CVE-2026-34060?: CVE-2026-34060 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-34060 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (38th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-34060?: CVE-2026-34060 primarily affects Shopify Ruby Lsp. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2026-34060?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2026-34060 have an EU (EUVD) identifier?: Yes. CVE-2026-34060 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-17282.
When was CVE-2026-34060 published?: CVE-2026-34060 was published on 2026-03-31 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:a:shopify:ruby_lsp:*:*:*:*:*:visual_studio_code:*:*
cpe:2.3:a:shopify:ruby_lsp:*:*:*:*:*:ruby:*:*

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