# CVE-2026-48122: Workspace settings can override executable and Gemfile paths used by the Ruby LSP VS Code extension

> A malicious repository can override executable paths in the Ruby LSP VS Code extension, leading to code execution when the developer opens and trusts the repository.

- **Severity:** Medium 5.4 (`CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Local or same network only
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 7 Aug 2026
- **Updated:** 12 Aug 2026
- **Also known as:** GHSA-2x7g-8mp4-572w, UBUNTU-CVE-2026-48122

## What is CVE-2026-48122?

CVE-2026-48122 is a medium-severity command injection vulnerability in Shopify ruby-lsp, published on 7 Aug 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

### Official description

Ruby LSP is an implementation of the language server protocol for Ruby. Several workspace-level settings in the Ruby LSP VS Code extension prior to version 0.10.4 could override the path to the Ruby executable, the version manager executables, or the Bundler `Gemfile` used at startup. A malicious repository containing a `.vscode/settings.json` could set these values to attacker-controlled targets. Opening and trusting the repository would then execute code with the privileges of the developer. The Ruby LSP gem and clients of the language server in other editors are not affected. Version 0.10.4 of the Ruby LSP VS Code extension fixes the issue.

Weakness: CWE-78 (Improper Neutralization of Special Elements used in an OS Command)

## Which versions are affected by CVE-2026-48122?


## How do I fix CVE-2026-48122?

No fix has been published for CVE-2026-48122 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-48122 being exploited?

There is no known exploitation of CVE-2026-48122 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-48122 and fix it if it is affected.

What it is: CVE-2026-48122 is a medium-severity command injection vulnerability in Shopify ruby-lsp, published on 7 Aug 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2026-48122 in the wild and no public exploit code.

Affected product: Shopify ruby-lsp. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-48122/ (Markdown: https://insights.sbomify.com/CVE-2026-48122/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-48122
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-48122
- OSV: https://osv.dev/vulnerability/CVE-2026-48122

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-48122/
Summaries are generated and may contain mistakes; the official description above is the record.