CVE-2026-34060

CRITICALPre-NVD 9.89.8
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to the CVSS score beside it.

This critical-severity CVE scores 9.8 under CISA-ADP (Vulnrichment) CVSS v3.1 (NVD's own analysis pending). EPSS exploit probability: 0.6% (47th percentile of EPSS-scored CVEs). No GitHub Security Advisory CVSS is on record for this CVE.

Triggered by: Headline CVSS from CISA-ADP (Vulnrichment) CVSS v3.1
Sources: CISA-ADP (Vulnrichment) CVSS v3.1, EPSS
Trending — 3 sources updated this week
9.8EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines at low or medium mission impact and sooner than that at high (the SSVC decision on this page).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.6%CVSS: 9.8Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

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.

CVSS v3
9.8
EG Score
9.8CRITICALmedium confidence
EG Risk
59
EG Risk 59/100

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed (value × EchelonGraph’s weight)
Severity98% × 45%
The EG Score, 9.8 of 10.
Exploitation0.6% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability100% × 15%
CISA's SSVC Automatable value: yes (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Attend at high (mission-essential systems).
Exploitation none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
0.6%
EPSS %ILE
47th
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Attend at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)3 days if the affected system is publicly exposed; 60 days if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable yes (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

March 31, 2026

Last Modified

June 17, 2026

Advisory Details (2)

Auto-updated Oct 12, 2026
Patch available. Sources: github_release, github.
GitHub advisoryMentions a patch (unverified)

Arbitrary code execution through branch setting in ruby-lsp · Advisory · Shopify/ruby-lsp · GitHub

https://github.com/Shopify/ruby-lsp/security/advisories/GHSA-c4r5-fxqw-vh93
GitHub release Patch Available

v0.26.9

Patch available: Shopify/ruby-lsp v0.26.9

https://github.com/Shopify/ruby-lsp/releases/tag/v0.26.9

Affected Packages

(2 across 2 ecosystems)
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
ruby-ruby-lsp0.26.6-1, 0.26.6-2, 0.26.7-1
  • every version up to 0.26.9-0.1: fixed in 0.26.9-0.1
—
RubyGems(1)
PackageVulnerable rangeFix by version rangeDependents
ruby-lsp0.0.1 ... 0.9.4 (147 versions)
  • every version up to 0.26.9: fixed in 0.26.9
—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 17× in last 7d / 34× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

Showing the most recent 96 of 195 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. 4 repeat rows among the latest 100 are merged into the row they repeat. The 99 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-17 06:22 UTCEG score recompute
  2. 2026-10-16 16:41 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  3. 2026-10-16 07:41 UTCEG score recompute
  4. 2026-10-15 16:32 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  5. 2026-10-15 06:39 UTCEG score recompute
  6. 2026-10-14 16:32 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  7. 2026-10-14 02:20 UTCEG score recompute
  8. 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  9. 2026-10-12 22:37 UTCEG score recompute
  10. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  11. 2026-10-12 16:13 UTCEG score recompute
  12. 2026-10-11 19:55 UTCEG score recompute
  13. 2026-10-11 17:08 UTCEG score recompute
  14. 2026-10-11 14:35 UTCEG score recompute
  15. 2026-10-11 13:48 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  16. 2026-10-11 03:31 UTCOSV refresh
  17. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  18. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  19. 2026-10-08 17:12 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  20. 2026-10-07 23:47 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  21. 2026-10-06 15:17 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  22. 2026-10-05 17:42 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  23. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  24. 2026-10-03 14:25 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  25. 2026-10-01 19:49 UTCEPSS rescoreEPSS 0.6% · 46th percentile
Show 71 more
  1. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  2. 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  3. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  4. 2026-09-26 15:58 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  5. 2026-09-26 00:26 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  6. 2026-09-21 15:19 UTCOSV refresh
  7. 2026-09-20 20:15 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  8. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  9. 2026-09-17 19:30 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  10. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  11. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  12. 2026-09-15 03:11 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  13. 2026-09-13 16:47 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  14. 2026-09-12 15:01 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  15. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  16. 2026-09-11 09:37 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  17. 2026-09-10 09:34 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  18. 2026-09-08 22:00 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  19. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  20. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  21. 2026-09-04 05:06 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  22. 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  23. 2026-09-02 12:44 UTCOSV refresh
  24. 2026-09-01 13:53 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  25. 2026-09-01 04:39 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  26. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  27. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  28. 2026-08-28 21:41 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  29. 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  30. 2026-08-26 14:46 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  31. 2026-08-25 13:49 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  32. 2026-08-24 14:17 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  33. 2026-08-23 00:19 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  34. 2026-08-21 23:49 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  35. 2026-08-20 22:55 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  36. 2026-08-19 17:03 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  37. 2026-08-18 13:48 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  38. 2026-08-17 13:47 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  39. 2026-08-16 14:56 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  40. 2026-08-16 09:42 UTCEG score recompute
  41. 2026-08-16 02:14 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  42. 2026-08-15 01:30 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  43. 2026-08-14 06:06 UTCEG score recompute
  44. 2026-08-13 22:00 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  45. 2026-08-12 20:26 UTCEG score recompute
  46. 2026-08-12 13:50 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  47. 2026-08-11 20:38 UTCEG score recompute
  48. 2026-08-11 03:39 UTCEG score recompute
  49. 2026-08-11 00:00 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  50. 2026-08-09 16:54 UTCEG score recompute
  51. 2026-08-09 13:46 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  52. 2026-08-09 05:41 UTCEG score recompute
  53. 2026-08-08 16:37 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  54. 2026-08-07 19:38 UTCEG score recompute
  55. 2026-08-06 18:13 UTCEG score recompute
  56. 2026-08-06 13:46 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  57. 2026-08-06 00:38 UTCEG score recompute
  58. 2026-08-05 19:17 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  59. 2026-08-04 15:10 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  60. 2026-08-04 10:38 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  61. 2026-08-03 22:58 UTCEG score recompute
  62. 2026-08-03 10:36 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  63. 2026-08-02 15:00 UTCEG score recompute
  64. 2026-08-02 02:27 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  65. 2026-08-01 04:16 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  66. 2026-07-30 16:28 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  67. 2026-07-30 01:30 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  68. 2026-07-27 14:13 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  69. 2026-07-26 14:54 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  70. 2026-07-25 14:18 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  71. 2026-07-24 14:17 UTCEPSS rescoreEPSS 0.5% · 38th percentile

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-34060?
CVE-2026-34060 is a critical-severity vulnerability; its CVE record was published on March 31, 2026. 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…
When was the CVE record for CVE-2026-34060 published?
The CVE record for CVE-2026-34060 was published on March 31, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of June 17, 2026; the record at its source may have been updated since.
Is CVE-2026-34060 actively exploited?
CVE-2026-34060 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.6% probability of exploitation in the next 30 days (47th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-34060?
CVE-2026-34060 has a CVSS v3.1 base score of 9.8 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-34060?
A fix for CVE-2026-34060 is available: update to the fixed version the vendor names in its advisory.

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