Path Traversal and Query Parameter Injection in HashiCorp Vault API Module
CVE-2026-55100

8.7HIGH

Key Information:

Vendor

Kyndryl-open-source

Status
Hashi-vault-js
Vendor
CVE Published:
31 July 2026

What is CVE-2026-55100?

The hashi-vault-js Node.js module for the HashiCorp Vault API contains a vulnerability that allows for path traversal and query parameter injection. This occurs because version strings, usernames, names, groups, roles, and additional identifier values are concatenated into request paths and query strings without proper encoding. As a result, attackers could craft malicious requests to exploit the unencoded parameters. This issue has been addressed in version 0.5.2 where the offending code is replaced with secure encoding methods such as encodeURIComponent() and URLSearchParams, preventing such injection attacks.

Affected Version(s)

hashi-vault-js < 0.5.2

References

https://github.com/kyndryl-open-source/hashi-vault-js/sec...
x_refsource_CONFIRM
https://github.com/kyndryl-open-source/hashi-vault-js/pul...
x_refsource_MISC
https://github.com/kyndryl-open-source/hashi-vault-js/com...
x_refsource_MISC

CVSS V4

Score:
8.7
Severity:
HIGH
Confidentiality:
High
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.