---
id: CVE-2026-55100
title: >-
  hashi-vault-js is a Node.js module for interacting with the HashiCorp Vault
  API
summary: >-
  hashi-vault-js is a Node.js module for interacting with the HashiCorp Vault
  API. Prior to 0.5.2, src/Vault.js concatenates unencoded identifier values
  including name, username, group, role, and version into Vault request paths
  and query …
severity: high
cwe:
  - CWE-23
  - CWE-74
vendor: hashi-vault-js
product: hashi-vault-js
affected:
  - hashi-vault-js <= 0.5.1
patched:
  - hashi-vault-js 0.5.2
published: '2026-07-31'
updated: '2026-09-10'
sourceUpdated: '2026-09-10T20:30:11.423'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-55100'
references:
  - url: >-
      https://github.com/kyndryl-open-source/hashi-vault-js/commit/ea2f76052d366a08f35f62ef4c12b6a334c91ec2
    label: security-advisories@github.com
  - url: 'https://github.com/kyndryl-open-source/hashi-vault-js/pull/66'
    label: security-advisories@github.com
  - url: 'https://github.com/kyndryl-open-source/hashi-vault-js/releases/tag/v0.5.2'
    label: security-advisories@github.com
  - url: >-
      https://github.com/kyndryl-open-source/hashi-vault-js/security/advisories/GHSA-g956-2f74-rmv7
    label: security-advisories@github.com
  - url: 'https://github.com/advisories/GHSA-g956-2f74-rmv7'
tags:
  - nvd
  - ghsa
  - npm
epss: 0.00382
epssPercentile: 0.32133
aliases:
  - GHSA-g956-2f74-rmv7
ecosystem: npm
ingestedAt: '2026-07-31T18:00:26.983Z'
---

## Overview

hashi-vault-js is a Node.js module for interacting with the HashiCorp Vault API. Prior to 0.5.2, src/Vault.js concatenates unencoded identifier values including name, username, group, role, and version into Vault request paths and query strings instead of using encodeURIComponent() and URLSearchParams, allowing path traversal and query parameter injection. This issue is fixed in version 0.5.2.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

## Package advisory (CVE-2026-55100)

Affected packages:

- `hashi-vault-js <= 0.5.1`

Patched in:

- `hashi-vault-js 0.5.2`

Source: https://github.com/advisories/GHSA-g956-2f74-rmv7