Vulnerabilities in pkg:npm/skilleton

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Advisory Summary

GHSA-5g3j-89fr-r2vp is a MODERATE skilleton has improper input handling vulnerability (CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')) affecting Skilleton libraries in the npm ecosystem. The issue involves skilleton has improper input handling in repository/path processing. Remediation is available by upgrading affected packages to version 0.3.1.

1 Known Advisory Record(s)
Package Vulnerability Intelligence

pkg:npm/skilleton

1 Known Advisory Record(s)

Vulnerability advisories affecting package pkg:npm/skilleton. Select an advisory below to view technical details or fixes.

Advisory ID CVE / NVD Severity Summary
GHSA-5g3j-89fr-r2vp - MODERATE skilleton has improper input handling in repository/path processing

GHSA-5g3j-89fr-r2vp at a Glance

CVE Identifier N/A
GHSA Identifier GHSA-5g3j-89fr-r2vp
Severity MODERATE
CVSS v3.1 Base Score N/A
CWE Classification CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Affected Product Skilleton
Package Ecosystem npm
Published Date
Last Updated

How to Fix GHSA-5g3j-89fr-r2vp

To remediate this vulnerability, upgrade all affected Skilleton dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

skilleton fixed: 0.3.1 
npm install skilleton@0.3.1
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

npm ls skilleton

How to Check if You Are Affected

To determine whether your Node.js application is affected by GHSA-5g3j-89fr-r2vp, inspect your project dependencies using npm:

npm ls skilleton

Analyze the terminal output to locate any version of Skilleton in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 0.3.1), your application is affected.

Note: The npm ls skilleton command inspects dependencies declared in your package.json and lockfile; it does not perform automated runtime dynamic scanning.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection'), where the product constructs all or part of an os command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended os command when it is sent to a downstream component. In Skilleton, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

## Summary `skilleton` versions prior to `0.3.1` include security-related weaknesses in repository normalization and path handling logic. Version `0.3.1` contains fixes and additional test coverage for these issues. ## Affected Versions `<0.3.1` ## Patched Versions `>=0.3.1` ## Impact In affected versions, crafted input could trigger unsafe or inefficient behavior in repository/path processing code paths. `0.3.1` mitigates this by: - replacing vulnerable parsing behavior with deterministic logic, - validating subpaths earlier before allocating git worktree resources, - adding stricter and broader regression tests around these flows. ## Severity Low to Moderate (project-maintainer assessed) ## Mitigation Upgrade to `0.3.1` or later. ## Workarounds No complete workaround is recommended other than upgrading. ## References - Branch: [`fix/security-code-scanning-alerts`](https://github.com/Fcmam5/skilleton/pull/9) - Commits: - [fix(security): harden git arg handling and path validation](https://github.com/Fcmam5/skilleton/pull/9/changes/42bc280ad675bfaa7b1bbc192330fb582bb28172) - [fix(security): use while loop in normalizeRepoUrl instead of regex](https://github.com/Fcmam5/skilleton/pull/9/changes/6613160803ec8655efee9a270eeaa767ad22da8b) - Security Policy: [SECURITY.md](https://github.com/Fcmam5/skilleton/blob/master/SECURITY.md) ## Credits Detected through automated code scanning and remediated by project maintainers.

GHSA-5g3j-89fr-r2vp Affected Skilleton Versions

1 component(s)
Fixed Versions:
0.3.1
Product / Package Ecosystem Affected Versions Fixed Version
skilleton
npm/skilleton
npm
< 0.3.1
0.3.1

References

GitHub Advisory / Wiki ADVISORY
https://github.com/Fcmam5/skilleton/security/advisories/GHSA-5g3j-89fr-r2vp
Skilleton Source Repository REPOSITORY
https://github.com/Fcmam5/skilleton/pull/9/changes/42bc280ad675bfaa7b1bbc192330fb582bb28172
Skilleton Source Repository REPOSITORY
https://github.com/Fcmam5/skilleton/pull/9/changes/6613160803ec8655efee9a270eeaa767ad22da8b
Skilleton Source Repository REPOSITORY
https://github.com/Fcmam5/skilleton

Frequently Asked Questions

What is GHSA-5g3j-89fr-r2vp?
GHSA-5g3j-89fr-r2vp is a security vulnerability in Skilleton involving skilleton has improper input handling in repository/path processing under CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection').
Which Skilleton versions are affected?
Affected versions include releases prior to 0.3.1 across affected packages: skilleton.
What version fixes GHSA-5g3j-89fr-r2vp?
Upgrading to 0.3.1 (or the latest patched release for your respective branch) resolves the vulnerability.
Is skilleton affected?
Yes, skilleton is affected in releases prior to 0.3.1. Upgrade your dependency to 0.3.1 or later.
What CWE is associated with GHSA-5g3j-89fr-r2vp?
GHSA-5g3j-89fr-r2vp is classified under CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') (The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component.).
How can I check npm dependencies for GHSA-5g3j-89fr-r2vp?
Run the dependency tree command: 'npm ls skilleton'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-5g3j-89fr-r2vp",
  "modified" : "2026-04-08T00:07:36Z",
  "published" : "2026-04-08T00:07:36Z",
  "aliases" : [ ],
  "summary" : "skilleton has improper input handling in repository/path processing",
  "details" : "## Summary\n\n`skilleton` versions prior to `0.3.1` include security-related weaknesses in repository normalization and path handling logic.  \nVersion `0.3.1` contains fixes and additional test coverage for these issues.\n\n## Affected Versions\n\n`<0.3.1`\n\n## Patched Versions\n\n`>=0.3.1`\n\n## Impact\n\nIn affected versions, crafted input could trigger unsafe or inefficient behavior in repository/path processing code paths.  \n`0.3.1` mitigates this by:\n- replacing vulnerable parsing behavior with deterministic logic,\n- validating subpaths earlier before allocating git worktree resources,\n- adding stricter and broader regression tests around these flows.\n\n## Severity\n\nLow to Moderate (project-maintainer assessed)\n\n## Mitigation\n\nUpgrade to `0.3.1` or later.\n\n## Workarounds\n\nNo complete workaround is recommended other than upgrading.\n\n## References\n\n- Branch: [`fix/security-code-scanning-alerts`](https://github.com/Fcmam5/skilleton/pull/9)\n- Commits:\n  - [fix(security): harden git arg handling and path validation](https://github.com/Fcmam5/skilleton/pull/9/changes/42bc280ad675bfaa7b1bbc192330fb582bb28172)\n  - [fix(security): use while loop in normalizeRepoUrl instead of regex](https://github.com/Fcmam5/skilleton/pull/9/changes/6613160803ec8655efee9a270eeaa767ad22da8b)\n- Security Policy: [SECURITY.md](https://github.com/Fcmam5/skilleton/blob/master/SECURITY.md)\n\n## Credits\n\nDetected through automated code scanning and remediated by project maintainers.",
  "severity" : [ {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "npm",
      "name" : "skilleton"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "0.3.1"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/Fcmam5/skilleton/security/advisories/GHSA-5g3j-89fr-r2vp"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/Fcmam5/skilleton/pull/9/changes/42bc280ad675bfaa7b1bbc192330fb582bb28172"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/Fcmam5/skilleton/pull/9/changes/6613160803ec8655efee9a270eeaa767ad22da8b"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/Fcmam5/skilleton"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-1333", "CWE-400", "CWE-78", "CWE-88" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-04-08T00:07:36Z",
    "nvd_published_at" : null
  }
}