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PatchSiren cyber security CVE debrief

CVE-2026-47167 vim CVE debrief

A code injection vulnerability exists in s:stepmatch() in the cucumber filetype plugin (runtime/ftplugin/cucumber.vim) on Vim builds with +ruby support. Prior to version 9.2.0496, step-definition patterns read from .rb files under the repository's features/*/ or stories/*/ directories are embedded into a Ruby Kernel.eval argument without sufficient escaping. This allows a crafted pattern in an attacker-controlled repository to execute arbitrary Ruby (and through it arbitrary shell commands) when the user invokes a step-jump mapping ([d, ]d).

Vendor
vim
Product
Unknown
CVSS
MEDIUM 5.1
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-11
Original CVE updated
2026-06-15
Advisory published
2026-06-11
Advisory updated
2026-06-15

Who should care

Users of Vim with +ruby support, especially those working with cucumber filetype plugins.

Technical summary

The vulnerability exists due to insufficient escaping of step-definition patterns read from .rb files. This allows an attacker to execute arbitrary Ruby and shell commands.

Defensive priority

MEDIUM

Recommended defensive actions

  • Update Vim to version 9.2.0496 or later.
  • Avoid using untrusted repositories with cucumber filetype plugins.
  • Use caution when invoking step-jump mappings.

Evidence notes

CVE-2026-47167 has a CVSS score of 5.1 and is classified as MEDIUM severity.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-47167 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-47167

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-47167 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-47167

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.